The correct answer is A) providing a framework for government.
By outlaying the three branches of the federal government, establishing a bicameral legislature, and defining the relationships between these entities, the U.S. Constitution is fulfilling its goal of providing a framework for government.
In doing that the US Constitution is clearly establishing the order, branches, and functions of the US government, based on the separation of powers under the system of checks and balances that served well. The federal government is divided into three branches. The executive branch, that is the President of the US. The legislative branch, that is the US Congress, and the judicial branch, that is the Supreme Court.