Billy, a five-year-old boy, sees his father applying shaving cream on his face while shaving his beard in front of a mirror. billy copies his father's facial and hand movements and later that day billy stands in front of the mirror and pretends to shave. billy's behavior is an example of dark adaption learning by association mimicry habituation

Mimicry.

Explanation:

Mimicry may be defined as the art of imitating or copying the act of someone or something. Children are most likely to imitate the other person in order to understand and entertain them.

Billy when he saws his father doing shaving, started copying his father and starts shaving. Billy behavior shoes the example of mimicry. Because he is trying to copy the act of his father. This is children psychology that like to imitate someone.

Thus, the correct answer is option (3).-