Answer:
fear at the pet rat
Step-by-step explanation:
Conditioned response: In classical conditioning, the term conditioned response has been widely used which was developed by Ivan Pavlov.
The term conditioned response is defined as a learned response or a reflexive behavior towards a conditioned stimulus. The conditioned response is a kind of behavior whose existence is not natural but is learned and is a neutral stimulus previously.
In the question above, the conditioned response was fear at the pet rat.