Which of the following is an example of verbal communication?

Verbal communication refers to the use of spoken or written words to convey a message. Responding "hello" to a greeting exemplifies verbal communication because it involves the use of spoken language to engage with another person. This interaction not only conveys a greeting but also establishes a connection with the other individual through the use of words, which is the essence of verbal communication.

In contrast, other options provided focus on non-verbal forms of communication. Nodding in agreement indicates understanding or affirmation without the use of words, while using hand gestures to indicate direction employs physical movements to convey a message. Making eye contact while speaking enhances a conversation but does not involve verbalizing thoughts. These actions, while important in communication, are classified as non-verbal cues rather than verbal communication. Therefore, the choice that accurately represents verbal communication is the response "hello."