Which federal agency regulates the use of radiation-emitting products?

The correct choice is the Food and Drug Administration (FDA) because this agency is primarily responsible for regulating radiation-emitting products, including medical imaging devices such as X-ray machines, nuclear medicine equipment, and certain laser products. The FDA ensures that these devices meet safety and effectiveness standards to protect public health. Their regulatory framework includes pre-market approval processes, post-market surveillance, and quality assurance measures for manufacturers.

The Environmental Protection Agency (EPA) focuses on protecting human health and the environment and does monitor radiation levels in the environment but does not specifically regulate radiation-emitting medical devices. The Federal Communications Commission (FCC) regulates communications by radio, television, wire, and satellite, and while it does involve some aspects of radiation related to communications technology, it does not handle radiation-emitting products related to healthcare. The National Institutes of Health (NIH) primarily conducts and supports medical research rather than regulating products, so its role does not involve oversight of radiation-emitting technologies.