As People Age, the Biggest Impediment to Sex, Especially for Women

As people age, the biggest impediment to sex, especially for women is a partner gap.Which of the following represents the problem of partner gap for women?

A) Kimberly plans to marry a man younger than her but her parents do not approve of the marriage.
B) Huan wants to have children whereas Lawrence, her husband, does not.
C) After her husband died, Betty did not date for a long time until she met Bruce.
D) Helen and Ralph, who have been dating since the past year, want different things out of the relationship.