The correct answer is A) based on at least one of the expressed powers.
When Congress claims an implied power, it is supposed to be based on at least one of the expressed powers.
When we are talking about the expressed powers, these are the powers granted by the United States Constitution to Congress. For instance, the power to state a declaration of war, the power to allow aliens to become citizens of the United States, the power to levy taxes, or the power to regulate commerce between the states and trade with foreign nations.
