The correct answer is extinction
Explanation: Extinction, in Psychology, refers to the gradual weakening of a conditioned response that results in the decrease or disappearance of behavior. In other words, the conditioned behavior eventually stops.
In classical conditioning, extinction occurs when a conditioned stimulus is no longer paired with an unconditioned stimulus.
In operant conditioning, extinction can occur if the behavior is not reinforced, or if the type of reinforcement used is no longer rewarding.