Question

Which one of the following methods was used only once to ratify an amendment?

Answer 1

The correct answer is A. By approval of conventions in three-fourths of the states

The most common way is the third one, three-fourths of state legislatures and a supermajority of the congress approves it, however, only once the first method was used. It is a legitimate option outlined in the constitution. The congress can call for national conventions which can pass the amendment but this doesn't happen often.

Answer 2

Answer:

By approval of conventions in three-fourths of the states

Explanation:

Congress decides which method of ratification should be used. In fact, the convention method of ratification was used only once.