The basis for the rights of United States citizens is the:

Articles of Confederation
Constitution
Declaration of Independence
Magna Carta

declaration of independence

The basis for the rights of United States citizens is the Constitution. To arrive at this answer, we can eliminate the other options and understand the role each document played in shaping the United States.

The Articles of Confederation were the first governing document of the United States, but they did not establish a strong central government and were eventually replaced by the Constitution.

The Declaration of Independence, while significant in declaring the United States' independence from Britain, does not explicitly outline the rights of American citizens.

The Magna Carta, although influential in the development of constitutional law, is an English document that predates the establishment of the United States.

Therefore, the most appropriate and accurate answer is the Constitution, as it is the primary legal framework that outlines the rights, powers, and structure of the government, including the fundamental rights of American citizens.