Final answer:
Jason's behavior is being controlled by negative reinforcement, which is increasing the frequency of his trash disposal behavior to avoid the unpleasant stimulus of Lilly's nagging.
Step-by-step explanation:
Lilly has been nagging Jason to take out the trash. He finally takes out the trash to stop her from nagging. We thus predict that in the future, he is MORE likely to take the trash out in a timely fashion to stop/escape the nagging. Jason's behavior is being controlled by negative reinforcement.
Humans learn behaviors through conditioning. An example of this is when a child learns to put away toys to receive a bedtime story, which is a form of positive reinforcement. Conversely, negative reinforcement involves the removal of an unpleasant stimulus (like nagging) to increase the likelihood of a behavior being repeated. In this scenario, Jason is more likely to take out the trash promptly in the future to avoid Lilly's nagging.