Which document outlines the fundamental rights of citizens in the United States?

The Bill of Rights is the correct answer as it specifically consists of the first ten amendments to the U.S. Constitution and explicitly outlines the fundamental rights and freedoms guaranteed to individuals. These amendments provide protections such as freedom of speech, religion, the right to assembly, the right to bear arms, and protection against unreasonable searches and seizures, among others. This document serves as a critical foundation for civil liberties in the United States, ensuring that certain rights are protected from government infringement.

The Articles of Confederation, while an important historical document that established the first governing framework for the United States, do not contain specific protections of individual rights as seen in the Bill of Rights. The U.S. Constitution itself lays out the structure of government but did not originally include these specific rights until the Bill of Rights was ratified. The Federalist Papers are a collection of articles written to promote the ratification of the Constitution and provide insight into the framers' thoughts; however, they do not enumerate citizens' rights.