One Significant Conclusion That Can Be Drawn from the Recent

One significant conclusion that can be drawn from the recent research on sexuality in the United States such as that by Lillian Rubin (1990) and Edward Laumann et al. (1994) is that:

A) sexual behavior is generally more liberal than most people would have thought
B) sexual infidelity is common among both men and women
C) young people are more sexually active before marriage than was true in the past
D) masturbation is more common among women than men