A
Proposal by two-thirds vote in both houses of Congress and ratification by three-fourths of state legislatures.
B
Proposal by national convention called by two-thirds of state legislatures and ratification by three-fourths of state conventions.
C
Proposal by a majority vote in a national referendum and ratification by popular vote in three-fourths of the states.
D
Proposal by the President with approval from the Supreme Court and ratification by two-thirds of state governors.
✓ Correct Answer: Option A
The most common method for amending the Constitution involves proposal by a two-thirds vote in both the House and Senate, followed by ratification by three-fourths of the state legislatures. This method has been used for all but one amendment.