Answer:
[tex]\boxed {\boxed {\sf C. \ The \ Bill \ of \ Rights}}[/tex]
Explanation
When the new Constitution was developing in the late 1700s, there were 2 groups: the Federalists and Anti-Federalists.
Both groups knew the current form of government, the Articles of Confederation, was failing. However, the Federalists crafted an entirely new Constitution, but the Anti-Federalists just wanted amendments and revisions to the Articles.
The Articles resulted in a weak and decentralized government. The Anti-Federalists wanted this and stronger state governments. The representatives from these states refused to ratify unless a Bill of Rights was added. This would protect the people's rights in case a leader became too powerful.
