Which of the Following Statements Supports the Historical Idea That

Which of the following statements supports the historical idea that women invest much more in the entire process of reproduction.

A) As a woman ages, the experience of labor and childbirth becomes much less dangerous.
B) Throughout pregnancy and during breastfeeding, the mother continually shares her scarce bodily resources with her young child.
C) When a young women becomes pregnant, the chances of her attracting a male increases by 10%.
D) The woman's window of fertility is basically unlimited after puberty.