Answer:
The correct option is D: generalization
Explanation:
Classical conditioning process of generalization occurs when a person respond to a stimulus that seems like a conditioned stimulus in the same manner of response as though it was a reaction to the conditioned stimulus. As long as the stimulus looks more like the conditioned stimulus, the new stimulus is taken to be the conditioned stimulus. In this case, the conditioned stimulus is the bite from parrot, and the conditioned response is fear. The new stimulus here becomes bite from any other bird, because parrot is a bird.