Answer:
A). escape conditioning
Step-by-step explanation:
From the question, we are informed about John's girlfriend who is is constantly asking him where he's going, what he's doing, who he's doing it with. This nagging is quite aversive to Johnny. As a result, Johnny ends his relationship. In this case this is an example of escape conditioning. Escape conditioning can be regarded as a kind of a aversive conditioning( avoided stimuli conditioning) whereby aversive stimuli which is an unpleasant stimuli is responded by an individual by leaving the stimuli situation and move away. In other words it is behavior that was put up in the termination of an aversive stimulus, which is an pain or unpleasant situation.