If congress decided to pass a law to eliminate the penny, this would be the use of a(n) power

A. enumerated

Explanation:

Enumerated powers are those granted to the government, more specifically to the Congress, that are listed in Article I, Section 8, of the United States Constitution. One of its provisions states that the Congress shall have power "To coin money, regulate the value thereof, and of foreign coin, and fix the standard of weights and measures". Thus, to eliminate the penny is one of the enumerated powers that the Congress has as it is explicitly stated in Article I.