The answer is The Bill of Rights.
The Social Contract is a philosophical concept, most notably associated with Jean-Jacques Rousseau, which describes an implicit agreement among individuals to form a society and abide by its rules. It is not related to the amendments of the U.S. Constitution.
The Declaration of Independence is a historic document adopted on July 4, 1776, in which the thirteen American colonies declared their independence from British rule. It is not related to the amendments of the U.S. Constitution.
The Constitution of the United States is the supreme law of the United States, originally ratified in 1788. While it includes the framework for the government, the first ten amendments are specifically known as the Bill of Rights.
The Bill of Rights refers to the first ten amendments to the United States Constitution. These amendments were ratified on December 15, 1791, and they guarantee essential rights and liberties, such as freedom of speech, religion, and the press, as well as protections against governmental abuses of power.