Which of the following represents nonverbal behaviors?

Nonverbal behaviors are forms of communication that do not involve spoken or written words. They include a variety of actions, expressions, and other nonverbal cues that convey feelings and attitudes. Eye contact and tone of voice are prime examples of nonverbal communication. Eye contact can indicate engagement, interest, or confidence, while tone of voice can convey emotions such as warmth, sarcasm, or urgency.

The other options focus on forms of communication that rely on words or structured formats. Written communication is a verbal form of conveying messages through text, while verbal affirmations are spoken acknowledgments or agreements. Structured interviews, though they can involve nonverbal elements, primarily consist of spoken inquiries and responses, making them a verbal communication method. Hence, eye contact and tone of voice distinctly categorize as nonverbal behaviors, making this choice the most accurate representation.