Which one of the following articles is related to the amendment of the U.S. Constitution?

Correct option is C

Article V of the U.S. Constitution outlines the process for amending the Constitution. It provides two methods for proposing amendments: either 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 state legislatures. Ratification requires approval by three-fourths of the states.