Which of the following statements is true of psychoactive drugs? A. They act on the…

Which of the following statements is true of psychoactive drugs?
A. They act on the nervous system to modify perceptions and change moods.
B. They are specifically used to diagnose, cure, treat, or prevent disease.
C. They are medicines sold directly to a consumer without a prescription from a healthcare professional.
D. They are drugs used in the treatment and prevention of bacterial infections.