What does the Constitution do?

Why this is the answer

Any one of the three official answers is enough here: the Constitution sets up the government, defines the government, or protects basic rights of Americans. They describe the same document from three sides. The first two are about structure. When the Constitution was written in Philadelphia in 1787, it had a preamble followed by seven articles, and the first three each create a branch. Article I gives the legislative powers to Congress, Article II places the executive power in a President, and Article III vests the judicial power in a Supreme Court and whatever lower courts Congress decides to create. That is what "sets up" means in practice. "Defines" goes one step further, because the document also says what each branch may do and splits authority between the national government and the states, the division known as federalism. The Framers drew those lines on purpose. They wanted government power limited, and separating it into three parts was how they did it. The third answer is about rights. The 1787 text had no list of individual rights; the first ten amendments, the Bill of Rights, were added to supply one. USCIS describes the Constitution as listing fundamental rights for citizens and also for other people living in the country, so many of these protections do not depend on citizenship at all. The usual stumble on this card is borrowing from the Declaration of Independence and saying the Constitution "declared independence." That was a different document with a different job. Another slip is answering "it is the supreme law." True, but that answers question 1; this question asks what the document does. To keep the three answers together, picture an architect's plan: it lays out the building, labels every room and what it is for, and marks the doors that stay locked to protect the people inside.