In what type of government is government power centralized?
a. unitary
b. federal
c. totalitarian
d. confederate

The answer is option A. Unitary
Unitary Government is a type of government in which government power is centralized and it operates as one unit.
When the power is centralized in a government that type of government is called unitary system of government and when power is distributed among the central government and local government, then the system is federal system of government.