Answer:Among the options given on the question the correct answer is option A.
the power to regulate commerce
Explanation: Congress is the legislative brunch of US government. They enact and pass any law regarding the country. There are different departments to enforce the law made by the Congress.
Congress has the power to regulate food and drugs. Because they have the power to regulate commerce. FDA is the department which works for food and drug regulation. Food and Drug Administration works for inspecting the food and drugs before they are gone into market for trade.
They also set the standard for food and drugs. So when any company produce any new product they have to follow the FDA instructions.
By making these rules the FDA works for Congress to regulate commerce to regulate food and drugs.