Final answer:
The Animal Welfare Act is a federal law overseen by the USDA, responsible for various animal welfare regulations, not by the FDA, EPA, or CDC.
Step-by-step explanation:
The Animal Welfare Act is a federal law that is managed and enforced by the United States Department of Agriculture (USDA). The USDA is responsible for overseeing multiple aspects of animal welfare, including regulations around the care and use of animals in research as well as the handling, transport, and sale of certain animals. The Act has been updated multiple times since its original passage to enhance protections for animals and ensure humane practices in laboratories and other settings. However, it's important to note that the FDA, while having a significant role in regulating animal foods and drugs through its Center for Veterinary Medicine (CVM), does not oversee the Animal Welfare Act itself. This responsibility falls firmly under the purview of the USDA, not the FDA, EPA, or CDC.