Which of the following was necessary before the U. S. Constitution went into effect?
A.
It needed to be accepted by all the American voters.
B.
It needed to be accepted by the Supreme Court.
C.
It needed to be accepted by all 13 states.
D.
It needed to be accepted by 9 of the 13 states.

C

Explanation:

D wont work because they only need 3rds of the country to agree to make a change to a Constitution. C only works because before then they needed all 13 states to agree with it. A and B wont work because A the constitution would have never been made because you need all 13 state to agree and back then it was up to the state because the confederal government. B wont work because supreme court only declare laws unconstitutional or constitutional.

i believe 5 is correct answer