Johnny is ""hammering"" the nail in with his toy hammer as his father is hammering the deck boards. johnny's behavior is a clear example of: classical learning. reinforced learning. observational conditioning. modeling.

Modeling

Explanation:

Modeling, or observational learning, is a kind of learning that occurs by demonstration. A certain behavior is modeled so that another person would observe, retain and imitate it by observation, without the need for spoken instructions. Johnny's father is modeling how to use a hammer and Johnny is reproducing the role model.