Very few people in the United States today marry outside their own socioeconomic class, which suggests that there is a high degree of

A) endogamy.
B) exogamy.
C) polyandry.
D) polygamy.

Endogamy refers to the social norm of marrying within one's own social group, such as one's own socioeconomic class. The fact that very few people in the United States marry outside their own socioeconomic class suggests a high degree of endogamy. Exogamy, on the other hand, refers to the social norm of marrying outside one's social group. Polyandry and polygamy refer to forms of marriage in which individuals have multiple spouses.