Correct option is C
Article V of the U.S. Constitution establishes the formal process for amending the Constitution. It provides two methods for proposing amendments:
By a two-thirds majority in both the House of Representatives and the Senate, or
By a constitutional convention called for by two-thirds of the state legislatures.
To be ratified, proposed amendments must then be approved by three-fourths of the states, either through their legislatures or through ratifying conventions, as Congress may propose.
Information Booster:
As of now, 27 amendments have been made to the U.S. Constitution.
The first 10 amendments are collectively known as the Bill of Rights.
The Equal Rights Amendment (ERA) is one of the most debated proposed amendments yet to be fully ratified.