Which of the following is NOT governed by the Food and Drug Administration (FDA)?

The correct answer is based on the regulatory responsibilities assigned to the Food and Drug Administration (FDA). The FDA plays a pivotal role in overseeing various aspects related to food safety and public health, including the monitoring of medications used in animals, manufacturing standards for food additives, and ensuring the safety of animals that may enter the food supply for human consumption.

However, the issuance of licenses to veterinarians for using controlled substances falls under the jurisdiction of the Drug Enforcement Administration (DEA). The DEA regulates controlled substances, ensuring they are used safely and effectively in veterinary medicine, but licensing veterinarians to use these substances is not part of the FDA's role. Therefore, among the given choices, the function concerning the licensing of veterinarians for controlled substances is the one not governed by the FDA.