Answer:
The correct answer is: Negative.
Step-by-step explanation:
Negative reinforcement occurs when a response is reinforced by stopping or removing an aversive stimulus.
-In this particular case, Michael is trying to concentrate on an assignment he has from work and his son is whining and complaining. The whining and complaining of Michael's son can be understood as an aversive stimulus to Michael. To remove the aversive stimulus, Michael decides to put the movie in right then.
-This stops the sons' whines, thus the response of putting the movie gets reinforced. The next time Michael's son starts whining and complaining is more probable that Michael's behavior of putting the movie happens.
In conclusion, the correct answer is "Negative".