Research has determined that there is a biological explanation for why women live longer than men. Which of these is true?
a. Women have two X chromosomes whereas men have only one.
b. Women have a higher brain-to-body weight ratio.
c. Women have less testosterone.
d. None of these have enough scientific support to explain why women, on average and in industrialized countries, outlive men.
Question 2
In most industrialized countries, women's average longevity is about years more than men's at birth.
a. 1
b. 5
c. 7
d. 10