Final answer:
In Navajo culture, a man's relationship to his mother-in-law and his wife's sisters is characterized by the importance of the matrilineal family.
Step-by-step explanation:
In Navajo culture, the relationship between a man and his mother-in-law and his wife's sisters is characterized by the importance of the matrilineal family. The Navajo are a matrilineal society, which means that descent and inheritance are traced through the mother's line, and daughters bring their husbands to live with or near their matrilineal kin after marriage. Matrilineal descent elevates the role of women in society and during major life events, such as marriage and childbirth, the matrilineal family provides support in the form of resources and labor.