Answer:
Observational learning.
Explanation:
As it's name suggests, the observational learning is based on the repetition of certain behaviors, attitudes, actions, etc., received through observation. Such as the exercise presents the comparison between puppies who had previously seen their mother locate and retrieve narcotics against those who hadn't. This indicates that the puppies who had could replicate the behavior that they had seen and, therefore, were significantly better at performing the task.