What does the Constitution do?

The Constitution serves as the foundational legal document for the United States, effectively establishing the supreme laws of the land. It outlines the framework of government and defines the powers and responsibilities of different branches, ensuring a system of checks and balances. Through its various articles and amendments, it lays the groundwork for how laws are created, interpreted, and enforced, making it the primary source of legal authority in the nation.

While other choices contain elements related to the Constitution, such as the creation of the executive branch and guarantees of human rights, these are specific aspects of a larger framework rather than the overarching function. The Constitution does not address the country's geographical borders, which are determined by historical treaties and political agreements. Therefore, establishing the laws of the land encapsulates the Constitution's primary purpose more broadly and accurately.