The answer is A, the rest don’t really seem reasonable. And during the middle ages it was a time for great process in arts and SCIENCE! And the only one involving science is A :))
There was a lot of public discussion in the States over the Constitution's ratification procedure. Nine of the thirteen State legislatures needed to ratify it in order for it to go into force; unanimity was not necessary.
First, three-fourths of state conventions or state legislatures must support each amendment. Getting many states to concur on a long-lasting amendment to the Constitution is exceedingly challenging.
However, it wouldn't be until 1790 that the Constitution would eventually be accepted and ratified by all states. Roadblocks included disagreements about the delegates' authority, anti-federalist phobias, and the absence of a Bill of Rights. However, the new administration's concessions and pledges ultimately resulted in a solution.
To learn more about ratification
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C. McColloch v. Maryland
The Supreme Court ruled that the bank was both constitutional and that as an agent of the federal government it could not be taxed
The answer is the Fourteenth Amendment.
Hope this helps!