A plan of gov’t that explains the parts of the gov’t, their powers and limitations – A. Formulation
B. Resolution

C. Declaration

D. Constitution

D. Constitution

Explanation:

The Constitution is the largest state legal document of a state. The Constitution regulates all important issues in the country, including the structure, functioning and limitation of government activities. The Constitution is an inevitable document for the legal functioning of a democratic system. The Constitution covers all citizens without exception.

"a government in which power is divided between state and national levels". federalism is a system of government in which entities such and state and province, share power with the national government.