Answer:
Marc's mother is using operant conditioning or instrumental conditioning.
Explanation:
The operant condition is a learning or psychological process by which a expected behavior is reinforce by a positive stimulus. This mean that behavior can be modified by a positive or negative reinforcement. In this case a positive reinforcement would be "screen time", every time the expected behavior appears. That is how a person can change, because of the granifiying results. Doing homework brings satisfaction so the behavior is repeated.
