Final answer:
The advertising of over-the-counter (OTC) products is primarily regulated by the Federal Trade Commission (FTC), not the Food and Drug Administration, which is responsible for prescription drugs.The correct option is c.
Step-by-step explanation:
The advertising of over-the-counter (OTC) products is regulated primarily by the Federal Trade Commission (FTC). While the Food and Drug Administration (FDA) is responsible for overseeing the quality of substances sold as food in the United States and for the regulation of prescription drugs, including their advertising, promotion, efficacy, and safety, it is the FTC that regulates advertising and promotion for OTC drugs. This distinction ensures that consumers receive accurate information about nonprescription products while also maintaining the safety and efficacy of these products as mandated by federal regulations.