Which describes a unitary system?

A.
The states hold all the powers, but can grant some to the national government.

B.
The national government makes laws that affect the states but not the people directly.

C.
The national government makes all laws for its citizens.

D.
Both state and national governments make laws for their citizens.

C. The national government makes all laws for its citizens.

C.

The national government makes all laws for its citizens.

To determine which option describes a unitary system, let's go through each option and understand what it means:

A. The states hold all the powers, but can grant some to the national government.
In this option, the power lies primarily with the states, but they have the ability to delegate some powers to the national government. This does not describe a unitary system.

B. The national government makes laws that affect the states but not the people directly.
In this option, the laws made by the national government only affect the states and not the people directly. This does not describe a unitary system.

C. The national government makes all laws for its citizens.
In this option, the national government has the authority to make all laws that apply to its citizens. This describes a unitary system.

D. Both state and national governments make laws for their citizens.
In this option, both the state and national governments make laws for their citizens. This describes a federal system, not a unitary system.

Therefore, the correct option that describes a unitary system is C. The national government makes all laws for its citizens.