Answer:
C. the cat
Step-by-step explanation:
Conditioned stimulus: In a classical conditioning experiment, the conditioned stimulus is defined as a formerly neutral stimulus that, after being connected or associated with the unconditioned stimulus, automatically comes to prompt a conditioned response.
In the given example:
Conditioned response-Your fear today
Conditioned stimulus-the cat
Unconditioned response-Your crying
Unconditioned stimulus-Your mother's behavior.