Methods of communication

Correct answer: A. Digital communication requires verification along with speed

Explanation: The governing concept is responsible digital communication. Online media can distribute a message rapidly and widely, but speed and reach do not guarantee truth. The sender or receiver should check the source, date, evidence, and reliable corroboration before forwarding it, so A is correct. B wrongly assumes all posts are true, C denies broad reach, and D ignores public sharing.

Correct answer: A. Emergency warning and siren

Explanation: The governing concept is matching a message to a medium that can communicate its purpose effectively. A siren is designed to attract immediate attention and announce danger to many people, so it suits an emergency warning. A hand gesture cannot carry a long legal agreement, a bell cannot present detailed examination results, and a public poster is unsuitable for confidential information. Thus, option A is the only correct match.

Correct answer: A. Active listening and written recording

Explanation: The governing concept is purposeful use of communication methods. The student first listens attentively to identify important ideas and then records them in writing so the information can be remembered, reviewed, or shared accurately. This combines active listening with written recording. It is not merely non-verbal signalling, one-way visual communication, or public communication, because none of those descriptions includes the central acts of listening and taking notes. Option A is correct.

Correct answer: A. Giving an emergency evacuation instruction only in next week's newspaper

Explanation: The governing concept is choosing a medium according to urgency, audience, and message type. An emergency evacuation instruction must reach people immediately, so relying only on next week’s newspaper is dangerously slow and unsuitable. Email can distribute a timetable efficiently, a microphone supports a speech to a group, and a map represents directions visually. Thus, option A is the only example where the medium fails to meet the message’s urgency.

Correct answer: A. The purpose, receiver, urgency, and available resources

Explanation: The governing concept is audience- and situation-centred selection of a communication method. A suitable method depends on what the message must achieve, who will receive it, how urgently it is needed, and which resources are available. Option A combines these relevant factors. The sender's preference, message length, or cost alone may be considered, but none is sufficient by itself.

Correct answer: B. Using both mobile messages and a public announcement

Explanation: The governing concept is choosing a method according to urgency, reach, and reliability. A sudden closure requires rapid delivery to a large group, so combining mobile messages with a public announcement gives students more than one prompt and reduces the chance that someone misses the information. A wall note, one student, or a letter sent the next day is too limited or too slow for this situation.

Correct answer: C. Oral and visual communication

Explanation: The governing concept is that communication can combine different methods in one message. The teacher's spoken explanation is oral communication, while the diagrams convey information visually. Thus, option C correctly identifies oral and visual communication together. It is not oral only because the diagrams add a second method, not written only because speech is present, and not non-verbal only because spoken words carry the explanation.

Correct answer: D. Written letter

Explanation: The governing concept is adapting the communication method to the receiver's abilities. A written letter depends on reading skills, so it would be less effective for a receiver who cannot read; option D is therefore correct. A telephone conversation and an oral announcement use listening, while pictures and signs may communicate meaning without requiring full reading ability, although their clarity depends on design and context.

Correct answer: A. A small text message or recorded note

Explanation: The governing concept is matching a communication medium to technical conditions. Slow internet usually handles low-bandwidth content more successfully than high-quality live video or large repeated files. Therefore, a small text message or recorded note is the most practical choice in option A. High-quality video may keep buffering, large files consume more data, and sending nothing fails to communicate the required information.

Correct answer: B. Both immediate feedback and body signals are available

Explanation: The governing concept is two-way, immediate communication supported by non-verbal cues. In face-to-face interaction, participants can respond at once and observe facial expressions, gestures, and posture; therefore option B is correct. Privacy is not guaranteed, a conversation does not automatically create a permanent written record, and listening remains essential. The combined feedback makes the method especially useful for clarification.

Correct answer: D. Email can include a subject, organized details, and a record

Explanation: The governing concept is selecting a formal written medium that supports clarity and record-keeping. Email can have a subject line, organized paragraphs or attachments, and a saved copy that can be referred to later, so option D is correct. Email does use words, is not limited to voice, and can receive replies; the distractors incorrectly describe its features or feedback capability.

Correct answer: C. Because listening carefully and responding to others are also necessary

Explanation: The governing concept is two-way communication. In a group discussion, a participant must express ideas, listen actively to other speakers, understand their points, and respond appropriately. Listening and feedback allow the discussion to develop instead of becoming a series of unrelated speeches. Thus option C is correct. Writing or showing pictures is not compulsory, and voice is clearly used in discussion.

Correct answer: B. An illustrated poster and a brief oral explanation

Explanation: The governing concept is selecting complementary communication methods. An illustrated poster gives learners a visible reminder of a rule, while a brief oral explanation supplies details, context, and answers to questions. Combining visual and verbal communication improves understanding for a practical safety message. Therefore option B is correct. A long speech may be forgotten, a sealed letter may not reach learners, and meaningless signs cannot explain rules.

Correct answer: D. Immediate feedback

Explanation: The governing concept is feedback in the communication cycle. When the teacher answers immediately, the student receives a direct response and can check or clarify understanding at once. This makes the exchange interactive and two-way. Option D is correct; a permanent record is not guaranteed, a visual-only message is not involved, and a one-way broadcast does not allow an immediate reply.

Correct answer: B. They may reduce formality and clarity

Explanation: The governing concept is selecting communication style according to audience, purpose and medium. A formal application is expected to use precise, respectful and professional language. Excessive emojis can appear casual, distract from the written message and create ambiguity. Option B is correct; emojis do not erase text, produce only sound, or alter the paper size.

Correct answer: A. The email may not be read in time and an immediate response may not occur

Explanation: The governing concept is choosing a communication method according to urgency and required response time. In a medical emergency, an email may remain unopened or unnoticed, so help can be delayed; a method that attracts immediate attention is more suitable. Option A is correct. Email can contain words and varied attachments, while privacy is not the decisive issue here.

Correct answer: B. To support immediate understanding and later recall

Explanation: The governing concept is combining communication channels to improve accessibility and retention. Oral delivery allows the receiver to hear an explanation and ask for clarification immediately, while written instructions provide a reference for checking steps later. Option B is correct. The purpose is not length, decoration or confusion; clarity and recall are the practical benefits.

Correct answer: D. Discussing a student's personal problem

Explanation: The governing concept is matching the communication method to privacy, audience and purpose. A student’s personal problem may contain sensitive information and is best discussed privately, where confidentiality and empathetic dialogue are possible. Option D is correct. A holiday notice, station time and group safety warning are meant for broad audiences, so a public announcement is more suitable.

Correct answer: A. A microphone and clear visual material

Explanation: The governing concept is adapting communication aids to audience distance. A microphone increases the reach and audibility of the speaker’s voice, while large, clear visuals allow distant listeners to see the essential information. Option A is correct. A whisper, tiny print and silent speech reduce access rather than improve it, so options B, C and D are unsuitable.

Correct answer: B. A letter sent by post

Explanation: The governing concept is feedback speed in different communication methods. A postal letter must travel to the receiver, and a reply must travel back to the sender, so feedback can be delayed by delivery time. Face-to-face discussion, live video, and telephone calls normally allow immediate or nearly immediate responses. Therefore, option B is correct.

Correct answer: A. A private secure message to a verified receiver

Explanation: The governing concept is selecting a communication method according to privacy and audience. Confidential information should be sent through a secure channel only to a verified, authorized receiver. A public poster, loudspeaker announcement, or unrestricted group message exposes the information to people who may not be permitted to see it. Hence, option A is the safest choice.

Correct answer: B. Add examples, charts, and question-answer interaction

Explanation: The governing concept is adapting communication to the receiver's needs and using more than one method. If the voice is already clear, increasing volume will not solve a comprehension problem. Examples, charts, and question-answer interaction provide visual support, clarification, and feedback, helping students connect the idea with meaning. Therefore, option B is correct.

Correct answer: C. A sense of emphasis or shouting

Explanation: The governing concept is that written and digital communication can convey tone through formatting. In many mobile messaging contexts, writing an entire message in capital letters is conventionally interpreted as strong emphasis or as if the sender is shouting. It does not remove the written record or merely decorate the text. Thus, option C is correct, although context can affect interpretation.

Correct answer: A. The purpose of the message and the intended receiver

Explanation: The governing concept is purposeful selection of a communication medium. First identify what the message must achieve and who should receive it; urgency, privacy, complexity, and access can then guide the choice of channel. Device colour is irrelevant, the sender's preference alone is insufficient, and message length alone does not determine the best medium. Therefore, option A is correct.

Correct answer: B. Some details may be forgotten or misunderstood

Explanation: The governing concept is matching the communication method to the complexity of information. A long technical oral message moves quickly, gives the listener limited time to process details, and may be difficult to recall accurately without a record. Consequently, details may be forgotten or misunderstood. Written notes or visual support can help; the other options are not logical effects. Option B is correct.