Answer:
Negative reinforcement
Step-by-step explanation:
In aversive conditioning the use of something unpleasant, or a punishment, is the main point to stop an unwanted behavior. It is used to combat addictions such as smoking or alcoholism. By applying a negative reinforcement-aversive stimulus (here is chemicals to induce nausea, images of the dangers of smoking) immediately before or after smoking the likelihood of the smoking behavior occurring in the future is reduced.