Final answer:
Monogamy is the practice of being married to only one person at a time and only once in a lifetime, contrasting with polygamy, which includes polygyny and polyandry.option c is correct answer.
Step-by-step explanation:
The practice of marrying only one person and getting married only once during a lifetime is referred to as monogamy. Monogamy is the socially sanctioned union of two adults, which may be restricted to a man and a woman in some societies, or may include same-sex unions in others.
This is contrasted with polygamy, which is the state of being committed or married to more than one person at a time. The most common form of polygamy is polygyny, where one man is married to several women, and is practiced in various societies, particularly in northern Africa and east Asia.
Polyandry, where one woman is married to multiple men, is much less common. In the United States, marriage is equated with monogamy, and polygamy is illegal; however, a Gallup poll indicated that societal acceptance of polygamy is growing, though it remains among the least acceptable behaviors.