When Mark swears around his friends they laugh, but when he swears around his parents they ground him. As a result, Mark is less likely to swear when his parents are around. Mark's behavior of not swearing around his parents is a result of:

Discrimination training.

Explanation:

This is explained to be used in psychology and is explained to be direct explanatory term used in both classical and operant conditioning. Some experts are seen to use it especially because it is detailed in its dealings with ability to distinguish between one stimulus and similar stimuli. Therefore, multiple cases here make it to be lighted as a of means responding only to some certain stimuli, and not responding to those that are similar. In as much ad it sounds it exists and are in our daily behaviours of people we may have met or known; typical example of one is seen just if a bell tone were the conditioned stimulus, discrimination would involve being able to tell the difference between the bell sound and similar ones.

money is the anwser i think