Which action is prohibited under federal law regarding interstate commerce of foods and drugs?

• A. Interstate transport of adulterated foods and drugs
• B. Interstate transport of only misbranded foods
• C. Domestic sale of adulterated foods
• D. Advertising adulterated foods

Answer: (A)

Shipping foods or drugs that are adulterated across state lines is prohibited because federal law forbids bringing unsafe or contaminated products into interstate commerce. Adulteration means the product fails safety, quality, or purity standards, or is prepared under unsanitary conditions, so moving it between states would pose a public health risk and triggers enforcement under the FD&C Act. While misbranding and other illegal acts also exist, the option that directly describes transporting adulterated items across state lines best fits the interstate commerce prohibition. Domestic sales or advertising adulterated foods involve different prohibited actions, but the clear interstate restriction is about shipping adulterated products across state boundaries.