Which of the following describes the concept of endogamy?

Endogamy refers specifically to the practice of marrying within a particular social group, clan, or community. This means that individuals are encouraged or required to choose a spouse from within their own defined group, such as a family, community, or similar socioeconomic background. This practice helps to maintain cultural identity, social cohesion, and sometimes even property or political interests within the group.

The other choices describe concepts that are distinct from endogamy. Marriage outside a clan refers to exogamy, which is the practice of marrying outside one's social group. The option indicating any type of familial marriage is too broad and doesn't specify the social boundaries that define endogamy. Lastly, the idea of marriage that is discouraged does not accurately characterize endogamy since the latter emphasizes the encouragement of marriage within a group rather than any form of discouragement.