Answer:
Conditioned response
Step-by-step explanation:
The classical conditioning may be defined as a type of learning that produces a strong response by mixing the neutral stimuli with the strong stimuli. This learning was given by Pavlov.
Jessica earlier enjoys the fly but now she has a fear. The Jessica has developed the conditioned response of flying as the neutral stimulus has united with the stimulus of being anxious and physically sick and causes the classical conditioning.
Thus, the answer is conditioned response.