Answer:Spontaneous recovery
Explanation:Spontaneous recovery is a phenomenon in which a behavior that was thought to have extincted suddenly reappears.
This is common if the behavior was learnt through classical and operant conditioning. For this reason spontaneous recovery refers to how the conditioned response reappears after it has dissapeared for a while.
For Example Susan has been receiving interview calls and as a result has associated a ringing phone with an interview , which made her nervous. However , towards the end of the day when all interviews were over she was a bit relaxed until she heard a phone ringing again and the same nervousness came back.