Because Cross-Cultural Findings on the Reversals of Traditional Gender Roles

Because cross-cultural findings on the reversals of traditional gender roles are inconclusive, a more direct test of the importance of biology on gender typing could be achieved by

A) testing the impact of sex hormones on gender typing.
B) studying adolescent boys and girls in tribal villages.
C) observing infant behavioral preferences immediately after birth.
D) observing other-sex play in children who score high in androgyny.