According to a U.S. national survey conducted in 2009, by age 20, _____ percent of U.S. youth have engaged in sexual intercourse.
A. 77
B. 62
C. 90
D. 52
Answer:A
According to a U.S. national survey conducted in 2009, by age 20, _____ percent of U.S. youth have engaged in sexual intercourse.
A. 77 B. 62 C. 90 D. 52