Answer:
Conditioned stimulus
Step-by-step explanation:
Classical conditioning: The classical conditioning is a process in which a neutral stimulus gets paired with another stimulus that gives rise to a response repeatedly until it takes over the position of the neutral stimulus itself and produces a similar response.
Example: In the question above, as the sound of the can opener makes the cat come running in the kitchen every time Freeman uses the can opener.
Conditioned stimulus: In classical conditioning, the conditioned stimulus is the neutral stimulus that gets paired with the unconditioned stimulus and creates a conditioned response.
In the example given in the question above, the sound of the can opener is the conditioned stimulus.