c.the Constitution was amended, changing the way that the Vice President was elected.
*To rectify the flaw in the original presidential election mechanism, the Twelfth Amendment, ratified in 1804, was added to the United States Constitution. It called for electors to make a distinct choice between their selections for President and Vice President.* The flaw was that the people had voted for president and vicepresident, Jefferson and Burr, so they had a tie in votes.