Andrew Is a Heroin Addict, and He Usually Shoots Up

Multiple Choice

Andrew is a heroin addict, and he usually shoots up at his friend Dave's place. Following an intervention and treatment, Andrew is trying very hard to stop using heroin but finds that when he goes over to Dave's place, his craving for the drug is very strong. In this example, Dave's place serves as

A) an unconditioned response.
B) a conditioned stimulus.
C) a source of stimulus generalization.
D) a form of aversive conditioning.