Research Studies on the Cause of Homosexuality Have Shown That

Research studies on the cause of homosexuality have shown that

A) hormonal differences during pregnancy may alter areas of the brain that determine sexual behavior.
B) genes affect hormone levels beginning at puberty with low adult hormone levels often resulting in homosexuality.
C) homosexuality is clearly a choice made because of various learning experiences.
D) homosexuality is caused by poor parenting by heterosexual couples or a child being raised by a homosexual couple.