Answer:
Any of a wide variety of human behaviors in which humans engage that also have the potential of forming communicative messages is referred to as nonverbal behavior.
Step-by-step explanation:
As the name suggests, nonverbal behavior refers to any type of behavior that can result in communication even though words are not being used. Nonverbal communication can come from gestures, position of hands and legs, smiles or the lack thereof, way of looking etc. Those behaviors can also appear during verbal communication as well. It is very common for people to gesticulate while talking, which can help amplify what is being said. But even if the nonverbal behavior happens on its own, it can convey messages. Suppose you notice a frown on your boy/girlfriend's face. His/Her mouth is also curved downward. You can assume he/she is upset about something, even though he/she did not say anything.