Answer :
Answer:
The answer is norm.
Refer below for the explanation.
Explanation:
Therefore,
At the beginning of the twenty-first century, some people placed signs with crudely painted skeletons holding cell phones near roadways, usually facing freeway ramps. These signs indicated disapproval of using cell phones while driving, a practice some states have now made illegal. As a result of these laws an informal norm has become a law.
Norm is a pattern or a general rule.