In a classical federal state , residual powers are vested in the
federal and state governments
federal government
federal and local governments
state governments
Correct answer is D
Option D. "state governments" is correct because in a federal system, both levels of government (federal and state) have certain powers allocated to them, and any powers not expressly delegated to the federal government are generally reserved for the states. This includes residual powers that are not explicitly mentioned in the Constitution.