The National Survey of Sexual Health and Behavior (NSSHB)

The National Survey of Sexual Health and Behavior (NSSHB) :

A) was conducted in 1990 and funded by the U.S. Congress.
B) has largely been ignored by sexologists because political concerns greatly limited the types of questions researchers could ask.
C) was based on data from about 200 adults and adolescents.
D) included data from subjects randomly selected from a probability sample drawn from a file of residential addresses representing 98% of the U.S. population.