Federalism is select one: a. sole government authority in the national government. b. sole government authority in the states. c. a system of shared power by the state and national governments. d. a three-branch government with a system of checks and balances. e. the same as unitary government.

Option (C) is correct.

Explanation:

Federalism is considered as the compound mode of state, collaborating a general government with its regional entities in political system. Its unique feature,  demonstrated in example of contemporary federalism by US under its Constitution(1787),  it is considered to be a relationship between two levels of state established. Therefore it can be defined as a type of government where there is a segregation of power between each level.

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explanation:

answer; interpreting someone's past consistent with present deviance;