Final answer:
Anthropologists define marriage within the same tribe or ethnic group as endogamy or homogamy, and marriage outside the group as exogamy or heterogamy, with the correct pairing being A) homogamy; heterogamy.
Step-by-step explanation:
Anthropologists distinguish between endogamy, or marriage within the same tribe or ethnic group, and exogamy, or marriage outside the group. The correct answer to the question is: A) homogamy; heterogamy. Homogamy refers to marriage between individuals who are culturally similar, typically within the same social class or ethnic group, which matches the concept of endogamy. On the other hand, heterogamy pertains to marriage between individuals from different cultural, ethnic, or social backgrounds, aligning with the idea of exogamy.
In societies that incorporate class systems, an exogamous marriage is one that unites spouses from different social categories based on values such as love and compatibility, rather than social standing or economics. Conversely, an endogamous marriage involves partners from the same social background. Marriage customs like monogamy, polygamy, polygyny, and polyandry, as well as same-sex marriages, factor into how endogamy and exogamy function within different cultural contexts.