After nine states had ratified the constitution by mid-1788,
a. other states quickly followed.
b. all thirteen states had to obey it.
c. it became law in the united states.
d. none of the states had to obey it.

it is b because all thirteen states had to come to a 3/4 vote

B. all thirteen states had to obey it.

Explanation:

In the early stages of the Nation, they came upon an agreement where if 9 out of 13 states ratified the Constitution, all of them had to do it, many states did it promptly, but New York, the last state that ratified it, was a difficult part because a lot of anti-federalists pushed not to do so, including Governor George Clinton, all in all they ended up ratifyin it in mid-1788.

the supreme court can hear any case it wishes as long as four justices agree to hear it.

hope this , give me brainliest answer =j