What does the US Constitution do?

The United States Constitution serves as the foundational legal framework for the country. One of its primary functions is to set up and define the structure of the government, outlining the roles, powers, and responsibilities of the different branches: the legislative, executive, and judicial branches. This structure ensures a system of checks and balances, preventing any one branch from becoming too powerful.

In addition to establishing the government, the Constitution also protects the rights of individuals through the Bill of Rights and subsequent amendments. These amendments safeguard various fundamental liberties, including freedom of speech, religion, and the right to due process, ensuring that Americans' human rights are upheld.

By encompassing both the organization of government and the protection of individual rights, the Constitution fulfills multiple critical functions for the nation, making "all of the above" the correct choice.