Margaret Mead's Work in the Islands of the Western Pacific

Margaret Mead's work in the islands of the western Pacific contributed which of the following to a greater understanding of human sexuality?

A) This work provided evidence that men and women are naturally sexually promiscuous.
B) This work challenged the assumptions that sexual practices should be private rather than public.
C) This work challenged the assumptions that U.S.attitudes about sexuality were universal traits fixed in human nature.
D) This work explored the commonalities between human sexual practices and the sexual practices of other primates.