Answer:
Vicarious classical conditioning.
Step-by-step explanation:
Larry learned to fear rats when he was a child as he observed his mother’s extreme, irrational fear response upon seeing a rat. Larry developed his fear of rats through vicarious classical conditioning. Larry learned his fear when he observed his mother's reaction to a rat. He was conditioned by observing her reaction, he learned his fear observing her. In the vicarious classical conditioning, the response is learned by watching other people and seeing their reactions. This was studied by Albert Bandura.