Which of the following is part of the ratification process in the US Constitution that has never been used is it 3/4 of state conventions ratifying an amendment congress calls for a national Constitution convention Congress votes by 2/3 majority vote to pose an amendment or is it three for estate legends, legislator ratify an amendment

The option that has never been used is "Congress calls for a national Constitution convention."

The part of the ratification process in the US Constitution that has never been used is: Congress calls for a national Constitution convention.

The part of the ratification process in the US Constitution that has never been used is the option where Congress calls for a national Constitution convention. To further explain:

1. Three-fourths of state conventions ratifying an amendment: This is one method of ratification that has been used in the past. When an amendment is proposed by Congress, it can be ratified by three-fourths (or 38) of the state legislatures or state conventions.

2. Congress votes by a two-thirds majority vote to propose an amendment: This is the traditional method of proposing an amendment. If two-thirds of both houses of Congress vote in favor of an amendment, it is proposed for ratification.

3. Congress calling for a national Constitution convention: This method, although mentioned in Article V of the US Constitution, has never been used. If two-thirds (or 34) of the state legislatures submit applications to Congress, requesting a national convention for proposing amendments, then Congress is obligated to call such a convention. However, this has not yet occurred.

4. Three-fourths of state legislatures ratifying an amendment: This is another method of ratification that has been used in the past. When an amendment is proposed by Congress, it can be ratified by three-fourths (or 38) of the state legislatures.

In conclusion, the option that has never been used is Congress calling for a national Constitution convention.