A
A two-thirds vote in both houses of Congress and ratification by three-fourths of state legislatures.
B
A national convention called by two-thirds of the states and ratification by conventions in three-fourths of the states.
C
A two-thirds vote in one house of Congress and ratification by a majority of the states in a national referendum.
D
A presidential executive order followed by approval from the Supreme Court.
✓ Correct Answer: Option A
Article V outlines the amendment process. The most common method involves proposal by a two-thirds vote in both the House and Senate, followed by ratification by three-fourths of the state legislatures.