What does the Constitution primarily do?

The Constitution primarily establishes the framework of the government of the United States. It outlines the structure, functions, and powers of the three branches of government: the legislative, executive, and judicial branches. This foundational document delineates how government authority is to be exercised, the separation of powers, and the checks and balances designed to prevent any one branch from becoming too powerful.

By setting up the government, the Constitution also specifies the relationship between the federal government and the states, along with the rights of individuals, which are safeguarded by the Bill of Rights. This is central to understanding the operation of the U.S. government and the rights of its citizens.

Other options touch upon topics related to governance or societal issues but do not capture the primary purpose of the Constitution itself. For instance, while defining the roles of the President is a significant aspect of the Constitution, it constitutes just one part of the broader governmental framework that the Constitution establishes. Similarly, the establishment of a national religion is expressly prohibited by the First Amendment, reinforcing the principle of separation of church and state. Lastly, while environmental protection is important, it is not a primary function outlined in the Constitution.