Respuesta :
Answer:
Aroma
Explanation:
Conditioned stimulus: The term conditioned stimulus is being defined in the research of classical conditioning proposed by Ivan Pavlov and is also referred to as CS.
The conditioned stimulus (classical conditioning), is defined as a formerly neutral stimulus that triggers a conditioned response after when it becomes connected or associated with the unconditioned stimulus.
Example: In the question above, the conditioned stimulus is Aroma because John is being conditioned for getting ill whenever he goes to a restaurant like an aroma due to his experience.