Which of the following regularities in behavior can most likely be accounted for by the existence of a group norm?

It would be something like students tend to use less profanity with adults than they do with their peers.

Explanation:

The existence of a group norm often create some sort of pressure for people to conform due the fear of being outcasted by the groups.

Because When students are hanging out with their peers, they will become more likely to mimic the way their peers talk or behave even if they're thought differently by their parents.

no the answer is c only objects touching the earth's surface can be acted upon by an outside force