Which factor is related to the appearance of the speaker in communication?

The factor related to the appearance of the speaker in communication is facial expressions. Facial expressions play a crucial role in non-verbal communication and can significantly impact how a message is received by the audience. When a speaker uses appropriate facial expressions, it enhances their overall appearance and can help convey emotions, emphasize points, and establish a connection with the audience. This allows the speaker to appear more engaging and sincere, which can facilitate better understanding and retention of the message being communicated.

In contrast, distance from the audience, clarity of speech, and background noise are elements that influence the delivery and reception of a message but do not pertain specifically to the speaker's appearance. Distance can affect the audibility and visibility of the speaker, clarity of speech relates to how well the message is articulated, and background noise can disrupt communication but does not reflect the speaker's appearance or non-verbal cues.