The inability to conceive after 12 to 18 months of trying to become pregnant is known as

Which ethnic minority group has the lowest standard of living?

A) African Americans B) Native Americans C) Mexican Americans D) Puerto Rican Americans

Sexual orientation is best thought of as being:

a. "either-or," that is, a person has either a same-sex or an opposite-sex orientation b. the result of biological causes c. the result of social and psychological causes d. a continuum, with individuals varying in the degree to which they have same-sex and opposite-sex preferences