The APA style is governed by American Psychological Association. Option D is correct.
The American Psychological Associations, known as APA, is a scientific and professional organization that represents psychologists in the United States.
The APA has task forces in order to issue policy statements with regard several matters of social importance, such as abortion, human rights, the welfare of detainees, human trafficking, the rights of the mentally ill, IQ testing, sexual orientation change efforts, and gender equality.
