Why did the first congress add a bill of rights to the constitution?

The correct answer to this open question is the following.

The first Congress add a Bill of Rights to the constitution to outline the rights of individuals.

During the Constitutional Convention, federalists and anti-federalists debated on their respective arguments. The federalists -led by Alexander Hamilton- favored a strong central government. The antifederalists -led by Thomas Jefferson- did not agree on the idea of having a strong central government that limited the sovereignty of the states, considering that a risk of a government becoming a tyrant. Antifederalists considered that a Bill of Rights that protected the citizen was necessary to limit the power of the government. That is when James Madison drafted the Bill of Rights.

b is correct

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