Communication cycle and its elements

The school notice is the message and the parent is the receiver. The messaging application provides the digital route used to deliver that notice from the school to the parent. A route or tool used for transmission is the medium or channel, so the application is the medium. Option C is correct.

The acknowledgement is a response to the school’s notice. It tells the sender that the parent received the information, and it may also confirm attention or understanding. A reply made after receiving a message is feedback, whereas encoding is message formation. Therefore, option D is correct.

Knowing the receiver helps the sender consider the person’s age, knowledge, language, needs, and access to technology. On that basis, the sender can select suitable words, tone, level of detail, and channel. This improves understanding; it is not meant to make the message difficult or stop feedback. Option A is correct.

The word “yes” may simply show politeness, attention, or willingness to end the conversation; it does not always prove that the receiver understood the details. Asking for an explanation, repetition, or appropriate action gives stronger evidence. Thus the weakness occurs when actual understanding has not been confirmed.

The instruction includes a time but does not identify the particular book. The receiver’s question points out a missing detail and asks for clarification. Therefore the message lacks completeness and clarity. Communication did occur, because the receiver received it, but the original wording was not specific enough for confident action.

The message was transmitted, but the address directed it to someone or somewhere other than the intended receiver. Communication therefore failed at the delivery or recipient-identification stage. The simplicity of the wording and clarity of feedback are not the main issue. Hence, option D is correct.

Paraphrasing requires the receiver to express the meaning rather than merely repeat a polite “yes.” The sender can compare that explanation with the original idea and correct any misunderstanding. This makes it a useful feedback check. It does not change the channel, create a barrier, or make the message confidential.

The governing concept is online meeting etiquette and clear communication. Muting a microphone while not speaking prevents background sounds, such as typing, traffic, or nearby conversation, from disturbing other participants. The person should unmute when answering, presenting, or introducing themselves. Therefore A is correct; B, C, and D are speaking situations in which muting would prevent the intended message from being heard.

The governing concept is purposeful communication: the sender should make the message identifiable and choose a channel suited to its importance. A clear subject, concise wording and a dedicated announcement channel reduce noise and help recipients notice, understand and retrieve the information. More unrelated messages increase distraction, deleting everything may remove useful evidence, and vague wording creates misunderstanding rather than effective communication.