Women in the Twenty-First Century Are Waiting Longer to Have

Women in the twenty-first century are waiting longer to have children than in past generations.This suggests that they are likely making a life history trade-off; that is, they are maximizing

A) reproductive fitness instead of family size.
B) economic security instead of family size.
C) family size instead of economic security.
D) family size instead of increased life span.
E) increased life span instead of family size.