Which of the following is the part of the ratification process in the U.S. Constitution that has never been used?(1 point)%0D%0AResponses%0D%0A%0D%0ACongress calls for a national constitutional convention%0D%0ACongress calls for a national constitutional convention%0D%0A%0D%0Athree-fourths of state legislatures ratify an amendment%0D%0Athree-fourths of state legislatures ratify an amendment%0D%0A%0D%0ACongress votes by two-thirds majority vote to propose an amendment%0D%0ACongress votes by two-thirds majority vote to propose an amendment%0D%0A%0D%0Athree-fourths of state conventions ratify an amendment

Congress calls for a national constitutional convention

The part of the ratification process in the U.S. Constitution that has never been used is "Congress calls for a national constitutional convention."

The part of the ratification process in the U.S. Constitution that has never been used is when three-fourths of state conventions ratify an amendment.

To reach this conclusion, we need to analyze each option:

1. Congress calls for a national constitutional convention: This option is incorrect because a national constitutional convention has been called in the past. The last time it was called was in 1787, when the original U.S. Constitution was drafted.

2. Three-fourths of state legislatures ratify an amendment: This option is correct. Ratification by three-fourths of state legislatures is the most commonly used method for amending the U.S. Constitution. It has been used for all 27 amendments that have been ratified so far.

3. Congress votes by two-thirds majority vote to propose an amendment: This option is also correct. Congress has the power to propose amendments by a two-thirds majority vote in both the House of Representatives and the Senate. This method has been used to propose all 27 amendments.

4. Three-fourths of state conventions ratify an amendment: This option is incorrect because it has never been used. Although Article V of the U.S. Constitution allows for amendments to be ratified by three-fourths of state conventions, this method has never been used to date.

Therefore, the correct answer is "three-fourths of state conventions ratify an amendment."