Which organization monitors prescription drug diversion?

The Drug Enforcement Administration (DEA) plays a critical role in monitoring prescription drug diversion, which refers to the illegal distribution or misuse of prescription medications. The DEA enforces the Controlled Substances Act, which regulates the manufacturing, distribution, and dispensing of controlled substances. Its primary functions include investigating drug-related crimes, ensuring compliance with regulations, and implementing measures to prevent abuse and diversion.

The DEA conducts education and outreach programs to inform healthcare providers about appropriate prescribing practices and the potential risks associated with controlled substances. By monitoring prescription drug transactions and maintaining a close watch on pharmacies, healthcare practitioners, and suppliers, the DEA works to identify and prevent potential diversion activities.

Other organizations may have important roles in public health or drug regulations, but their focus is generally not on tracking or enforcing laws related to controlled substances as directly as the DEA. For instance, the FDA is primarily concerned with the safety and efficacy of drugs, the CDC focuses on public health issues, and the WHO is involved in global health initiatives and guidelines. Thus, the DEA's mandates align directly with the challenges of prescription drug diversion, making it the correct choice for this question.