Answer:spontaneous recovery
Explanation:Spontaneous recovery is a term associated with learning and conditioning. Specifically, spontaneous recovery is the reappearance of a response (a Conditioned Response; CR) that had been extinguished. The recovery can occur after a period of non-exposure to the Conditioned Stimulus (CS).
Spontaneous recovery is the reappearance of a Conditioned Response (CR) that has been extinguished. Pavlov and his classical conditioning experiments found that spontaneous recovery can occur after a period of not being exposed to the Conditioned Stimulus (CS).