Which of the following is an example of nonverbal communication?

Nonverbal communication encompasses any form of communication that does not involve spoken or written words. Body language is a key component of nonverbal communication and includes gestures, facial expressions, posture, and eye contact, all of which can convey messages, emotions, and attitudes without using words.

The other options, while forms of communication, rely on verbal or written language. Written reports and email correspondence utilize text to convey information, engaging the reader through written language rather than nonverbal cues. Telephone conversations involve spoken dialogue, allowing for vocal tone and inflection but still primarily depend on verbal communication methods. Therefore, body language stands out as the clear illustration of nonverbal communication in this context.