The correct answer is A. It is a system of shared power between states and national governments
Explanation:
Federalism is a government system that involves the division of power between a general national government and specific regional governments such as state governments or province governments. This implies the power is not only held by the national government but local governments have power over political decisions. Additionally, federalism is politically efficient because power and responsibilities are divided geographically; also, local governments have some autonomy. An example of this is the government in the U.S. in which there is national but also states governments.
