Hepatitis B virus is closely linked to which of the following?

In the United States the definition of abnormal behavior is presented in the official Diagnostic and Statistical Manual of Mental Disorders, published by the American Psychological Association.

Answer the following statement true (T) or false (F)

Which of the following is TRUE with respect to homosexuality?

a. Homosexuality is the result of nurturing, parenting, and other life experiences. b. Homosexuality is caused by prenatal or adult hormone imbalances. c. Sexual orientation involves powerful inner feelings, one's self-concept, and social identity. d. Changing one's sexual orientation is generally considered possible and harmless.