Tina Trained Her Dog to Fetch Her Slippers, and Would

Multiple Choice

Tina trained her dog to fetch her slippers, and would give him a treat each time he did it. She's noticed that recently her dog has started chewing on her slippers instead of bringing them to her. Which of the following describes this sort of situation?

A) Discrimination learning
B) Instinctive drift
C) Latent inhibition
D) Insight learning