The best descriptions of the framework for the Constitution from the options provided are:
- A system of checks and balances is designed to prevent abuse of power.
- The separation of powers ensures that no one branch has too much power.
These two principles are fundamental to the Constitution's framework, as they work together to limit the power of government and protect individual liberties.
The other options are incorrect:
- The statement about the four branches sharing power is not accurate, as the U.S. government is divided into three branches: the legislative, executive, and judicial.
- The statement regarding powers not mentioned in the Constitution belonging to the federal government is also incorrect; such powers are typically reserved for the states. This is clarified by the Tenth Amendment, which states that powers not delegated to the federal government are reserved for the states and the people.