Polygamy refers to which of the following practices?

Polygamy is a term that broadly refers to the practice of having more than one spouse. Specifically, it encompasses both polygyny, which is the practice of having more than one wife, and polyandry, which is the practice of having more than one husband. The correct answer, focusing on the specific practice in question, is that polygamy generally refers to the practice of having multiple wives (polygyny). This cultural or social structure is seen in various societies and is often associated with specific religious or cultural practices.

The other options diverge from the definition of polygamy. For instance, having two or more husbands describes polyandry, a subset of polygamous practices but not what "polygamy" generally refers to. Living together without marriage describes cohabitation, which is a separate issue altogether, focusing on living arrangements without formal marital bonds. Lastly, having multiple children is related to parenting and family size but does not pertain to the concept of polygamy, which specifically relates to marriage arrangements and the number of spouses involved.