PLEASE HELP Which sentence could be added to the second paragraph to strengthen the author's argument?
A.
Many families simply cannot afford to have one parent stay at home to raise the children.
B.
Approximately 17% of people in the United States work part-time, allowing them to be home with their children some of the time.
C.
Children who stay at home with one parent may have some problems with shyness later on.
D.
According to the United Nations, more than 85% of men and 65% of women work more than 40 hours a week outside the home.

Which of the number is main idea? ! i need ! (1) people may think that love and romantic feelings are enough of a basis for choosing a spouse. (2) the chances of a marriage surviving, however, would improve if prospective marriage partners considered a few unromantic questions before deciding on matrimony. (3) for example, do the two individuals involved share a common socioeconomic background? (4) the more similar they are in their social, economic, religious, and cultural backgrounds, the more similar their expectations about married life will be. (5) in addition, what are their goals? (6) it’s a big advantage to the marriage if they know and share one another’s goals concerning career, lifestyle, and family. (7) finally, and maybe most important, how does the prospective spouse treat others in his or her life? (8) during the courtship, the boyfriend or girlfriend may get special consideration, but in the long run, spouses will probably treat each other about the same way they treat their own family members.