The correct answer is C) to allow each branch's actions to be checked by another branch.
Many believe the United States Constitution was made to be inefficient, meaning it does not create a system that works quickly. Probably, the Founding Fathers have made the Constitution inefficient to allow each branch's actions to be checked by another branch.
We are referring to the system called "Checks and balance," in which each branch of the government of the United States has not absolute power and need the others for the optimal function and balance of powers. The three branches are, the Executive branch, that is the Presidency. The Legislative branch that is the US Congres; the House of Representatives and the Senate. And the third one, the Judicial, the Supreme Court.