Answer:
Classical conditioning, respondent conditioning, or Pavlovian conditioning.
Step-by-step explanation:
Classical conditioning (also called respondent conditioning or Pavlovian conditioning, named after Ivan Pavlov, a Russian physiologist who discovered this condition in the early 20th century when he was studying the digestive system of dogs). Classical conditioning is a process of learning done through association when two stimuli (environmental and natural) are linked together and then we get new learned responses from the personal or the animal, as is the case here with Harvey, associating turnips with Christmas at his grandmother’s house.