Answer: C. New amendments to the Constitution must be ratified by state legislatures or conventions.
Step-by-step explanation:
Congress may have the power to enact laws, but they cannot unilaterally change the Constitution. This power would make them absolute and beyond reproach because they could pass laws that are unconstitutional by changing the Constitution.
In view of that, the Constitution prohibits Congress from unilaterally changing it by providing that any new amendments to the Constitution be ratified by three-fourths of the state legislatures or conventions thereby limiting the powers of Congress.