Answer:
C. State governments and a central government share power and responsibility, is the correct answer.
Step-by-step explanation:
Federalism is the political philosophy in which group of people share the governing authority with a head and they are also bound with the head. In US the head is the central government and the states and provinces are the people. Both the states and centre have power and if they do not agree on something then supreme courts makes the decision. Currently, most of the countries of the world have federal form of government. USA, Switzerland and Australia follow this type of government.