Answer:
b. with similar backgrounds and interests.
Step-by-step explanation:
In sociology, cliques are groups of individuals who share interest and interact each other. Interacting with this groups is part of the social development because it helps to find a personal identity. These groups are seen during teen ages where the identity is formed.
The best examples of cliques are found in school ages, there are groups formed according to ethnicity, economic status or stereotypes like athletes and nerds.