Final answer:
Marcia's reawakened feelings towards a man wearing her late husband's cologne is an example of spontaneous recovery in classical conditioning, where an emotional response reappears after a period of no exposure to the conditioned stimulus.
Step-by-step explanation:
In the scenario described, Marcia’s reawakened feelings towards her new colleague because he wore a cologne similar to her late husband John's are an example of spontaneous recovery in classical conditioning. Spontaneous recovery refers to the return of a previously extinguished conditioned response after a period of no exposure to the conditioned stimulus. In this case, the scent of the cologne serves as the conditioned stimulus which, when reintroduced after many years, elicits an emotional response similar to the one associated with her late husband, even after a long period without that stimulus. This phenomenon is due to the implicit emotional conditioning that creates associations between stimuli and emotional responses, which are not easily forgotten and can spontaneously reappear when the stimuli are encountered again.