In a U.S. national survey conducted in 2009, _____ percent of twelfth-graders reported that they had experienced sexual intercourse, compared with _____ percent of ninth-graders.
A. 20; 10
B. 62; 32
C. 77; 90
D. 60; 52
Answer:B
In a U.S. national survey conducted in 2009, _____ percent of twelfth-graders reported that they had experienced sexual intercourse, compared with _____ percent of ninth-graders.
A. 20; 10 B. 62; 32 C. 77; 90 D. 60; 52