Answer: Negative Reinforcement
Explanation: Negative reinforcement is an efficient method that can be used to help teach desired behaviors by removing something uncomfortable in response to a stimulus which overtime, that target desired behavior increases with the knowledge that the unpleasant thing will be taken away.
for example when a mother switches off the TV when a son hasn't done his homework, and is watching cartoon, this will increase the chances that the son over time will do his homework before watching TV as he understands his mother would put off the TV if he doesn't .
Also, putting on a sweater when a person feels it is cold would make him or she feel warmer which will lead to an increase in the probability that response will be repeated in the future.