Which option demonstrates good telephone etiquette?

Correct answer: Greeting the caller, introducing oneself, and speaking clearly

A polite telephone conversation normally begins with a greeting and, when appropriate, the speaker’s name or organisation. Speaking clearly and listening carefully help the caller understand and respond. Shouting, cutting off the caller, or continuing in heavy background noise is discourteous and can cause misunderstanding, so those behaviours do not demonstrate good etiquette.