The table compares the ways amendments to a constitution can be proposed and ratified. Proposal Ratification Constitutional convention Majority vote on Election Day or in a special election Two-thirds vote of each legislative house Signatures equaling 15 percent of the number of votes cast for governor in the most recent election Which is a true statement about this constitution? (4 points) a It describes a state constitution. Only amendments to certain state constitutions may be proposed by voter signatures. b It describes a state constitution. Only amendments to certain state constitutions may be proposed by a constitutional convention. c It describes the U. S. Constitution. Only amendments the U. S. Constitution may be proposed by a constitutional convention. d It describes the U. S. Constitution. Only amendments to the U. S. Constitution may be proposed by voter signatures.