Answer:
spontaneous recovery
Explanation:
In classical conditioning, spontaneous recovery is the reappearance of the conditioned response after a rest period or a decreased response period. If the conditioned stimulus and the unconditioned stimulus are no longer associated, extinction will occur very quickly after spontaneous recovery. This is what is happening to Marcia, where after a period of rest she was attracted to another man because of the Jhon-like scent she had not felt in a while.
Classical conditioning is a learning process that occurs through associations between an environmental stimulus and a natural stimulus.