In the Mosher and associates Study from 2005, the vast majority of the participants Question 16 options: A experienced Gender Dysphoria
B experienced prejudice because of sexual orientation
C reported feelings of disapproval of others who were gay
D reported only heterosexual behavior

The correct answer is - option D.

Explanation:

The study conducted by the Mosher and his associates 2005 found about the sexual orientation and normal sexuality of an individual showed that the vast majority of participants had engaged only in heterosexual behavior.

Only 6.5% of total participants had exclusively engage in homosexual behavior. It shows that majority of individuals are involved sexually with opposite sex.

Thus, the correct answer is option D.