One Explanation for People's Anti-Gay Attitudes Toward Homosexual Men and Women

One explanation for people's anti-gay attitudes toward homosexual men and women are rooted in ____.

A) an innate, inborn aversion to these groups
B) a lack of familiarity with these groups
C) a sense of being in competition with these groups
D) a fear that they themselves will be the recipients of unwanted romantic or sexual advances from these groups