Answer:
C- Separation of powers
Step-by-step explanation:
Seperation of power is the system whereby responsibilities and power are divided and assigned to various arm of the gvernment inorder to ensure effecient and effective delivery of the dividends of democracy to the citizens.
This principle recognizes the fact that, despite the laws and rules of the federal government oft United States, the individual states in US also has its own power to enact laws that would enable it to deliver. This laws may be contrary to the federal laws.