Which act regulates the sale of prescription medications to prevent drug abuse?

The Controlled Substances Act is the correct answer as it serves to regulate the manufacture, importation, possession, use, and distribution of certain substances, including prescription medications, to prevent abuse and addiction. This act categorizes drugs into schedules based on their medical use, potential for abuse, and safety or dependence liability. By establishing a framework for the strict control of these substances, the act plays a crucial role in minimizing the risk of drug abuse and ensuring that medications are used safely and responsibly.

The other options, while related to drug regulation, focus on different aspects. The Drug Enforcement Act primarily addresses the enforcement of laws regarding controlled substances but does not encompass the comprehensive regulatory framework provided by the Controlled Substances Act. The Combat Methamphetamine Epidemic Act specifically targets the production of methamphetamine, particularly from over-the-counter medications, but is limited in scope compared to the Controlled Substances Act. The Food, Drug, and Cosmetic Act focuses on the safety and efficacy of food, drugs, and cosmetics but does not specifically regulate the sale of prescription medications in the context of preventing drug abuse.