Which of the following best describes the FDA's role?

The FDA's primary role is to protect public health by ensuring that new drugs, medical devices, and other related products are safe and effective before they can be marketed for human use. This encompasses a rigorous evaluation process where clinical data is reviewed to verify that a product meets established safety and efficacy standards. By overseeing the drug approval process, the FDA facilitates access to safe medications while minimizing risks associated with untested or potentially harmful substances.

While the FDA does have some involvement in veterinary drugs and animal food safety, these areas are not as comprehensive as its focus on human health products. Moreover, the FDA does engage in providing grants and funding for research, but this is not its primary function and is not the best descriptor of its overall role. Therefore, assuring the safety and effectiveness of new drugs and medical devices for human use is the most accurate representation of the FDA's core responsibilities.