How many states are needed to ratify the Constitution for it to become law?

A.) seven

B.) nine

C.) twelve

D.) thirteen

it is b. nine you can look it up on google

nine states

Instead, on September 28, Congress directed the state legislatures to call ratification conventions in each state. Article VII stipulated that nine states had to ratify the Constitution for it to go into effect. Beyond the legal requirements for ratification, the state conventions fulfilled other purposes.