Answer:
The correct answer is A. Before the Constitution could go into effect, 9 out of 13 states were required to approve it. This is known as the ratification process, and it was outlined in Article VII of the Constitution. After the Constitution was drafted at the Constitutional Convention in 1787, it had to be sent to the states for ratification. The ratification process was intense and involved a great deal of debate and discussion, with supporters of the Constitution (known as Federalists) and opponents (known as Anti-Federalists) arguing over the proper role of the federal government and the protection of individual rights. Ultimately, the Constitution was ratified by 9 states by 1788 and went into effect in 1789.