Answer:
spontaneous recovery
Explanation:
Spontaneous recovery in classical conditioning is a phenomenon that was described by Ivan Pavlov. He defines the term as the re-emergence of a conditioned response that has been previously extinguished. In other words it occurs when a conditioned response reappears after a delay or a rest period. In the case of Marcia, the reappearance of the smell of the cologne reminder her of John and she was drawn to her colleague because of this smell.