* Nonverbal communication refers to communication without using spoken words. It includes body language, facial expressions, gestures, and even things like tone of voice.
Let's analyze the options:
* A) interrupting a speaker: This is a verbal action, even if it's rude.
* B) laughing: This can be nonverbal, expressing amusement or even nervousness, but it's still a form of communication.
* C) nodding your head up and down to show you agree: This is a clear example of nonverbal communication, using a gesture to convey understanding.
* D) asking a question: This is verbal communication.
Therefore, nodding your head up and down to show you agree is the best example of nonverbal communication.