The correct option is C Tribe
A tribe is a human social group comprising numerous families, clans, or generations together with slaves, dependents, or adopted strangers. A tribe, though classically based on a remote common ancestor and thus shared kinship, is typically a political or ethnic unit that shares a common culture, language, and religion. Kinship forms the basis of tribal social organization. Most tribes are divided into exogamous clans and lineages. The marriage among tribals is based on the rule of tribal endogamy. Marriage is viewed as a contract and there are no prohibition on divorce and remarriage.