Answer:
d) extinction
Step-by-step explanation:
Extinction: It refers to the process of disappearance or fading of a formerly learned behavior when that particular behavior is not being reinforced. The process of extinction is mostly associated with operant conditioning yet it can occur in various types of behavioral conditioning.
Example: A person has trained his cat to sit whenever he commands by associating it with giving a cat food (reinforcement), but when he stops giving the cat food when he commands to sit then overtime the cat might not respond to the command.
The given example in the question above illustrates the operant conditioning process of extinction.