It is suggested do you says the following uses and social life
a. helps to clarify norms
b. unifies a group
c. diffuses tension and promotes social change
d. all of the above

d. all of the above

Explanation:

All of the things above are crucial to promote tolerance and peace in the society.

- helps to clarify norms

Norms are heavily depended on the culture. A certain culture might believe that a certain actions as wrong but that same action will be acceptable in another culture. In a diverse society like united states, we need to clarify the norms that can be accepted by all social groups.

- Unifies a Group

Even though each groups has its difference, the country need to focus on common interest that can unify the groups. Things such as good economy, safety from invaders, and clean environment are examples of situation that would most likely desired by all groups.

- diffuses tension and promotes social change

Conflict between social groups often unavoidable. But, it can be diffused through negotiation and mutual understanding. By doing this, both groups involved in the conflict could find a middle ground where they can compromise with one another.

can you give more details

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.