Which Statement Describes Some of the Best Evidence That We

Which statement describes some of the best evidence that we have so far on the causes of homosexuality?

A) Homosexuality is a mental illness and needs to be treated accordingly.
B) Homosexuality is primarily a matter of choice and with the right kind of behavioural and attitudinal conditioning the homosexual can become "straight."
C) Homosexuality is caused by an inability of young men and women to identify with their genitals-thus resulting in a confusion of gender identity.
D) Genetic factors and possible prenatal factors likely play a role in the development of sexual orientation,both heterosexuality and homosexuality.