Schedule III substances have moderate potential for abuse, potential for moderate physical dependence, and an accepted medical use.

• A. Substances with high potential for abuse and no medical use.
• B. Substances with low potential for abuse and accepted medical use.
• C. Substances with moderate potential for abuse, potential for moderate physical dependence, and an accepted medical use.
• D. Substances with no potential for abuse and no medical use.

Answer: (C)

Schedule classifications organize drugs by abuse potential and medical use. The statement describes substances with moderate potential for abuse, moderate physical dependence, and an accepted medical use, which is the defining trait of Schedule III. This places Schedule III between the higher-risk Schedule II and the lower-risk Schedule IV, both of which also require an accepted medical use but differ in abuse potential and dependence. The other descriptions point to different schedules: high abuse potential with no medical use is Schedule I; low abuse potential with medical use aligns with Schedule IV (or V in some contexts); and no medical use with no abuse potential isn’t consistent with how schedules are defined.