Concept:A federal state is a political system in which governmental power is shared between two constitutionally recognised levels of government.
Explanation:In a federal system, power is divided between the central, or federal, government and the constituent units such as states or provinces.
Each level of government exercises authority over its own area of jurisdiction.
The central government typically handles national concerns like defence, currency, and foreign policy.
The state or regional governments handle matters such as education, health, and local infrastructure.
This constitutional division of powers is what makes a state "federal" in nature.
A unitary state, by contrast, concentrates all supreme power in a single central government.
A coalition government refers to an alliance of two or more political parties sharing executive power.
"Concurrent state" and "cooperative government" are not the recognised terms for a country with two levels of government.
Answer:A. federal state