Which description best captures the structure of the U.S. government under separation of powers?

• A. A bicameral legislature
• B. A unitary system
• C. A confederation
• D. A tripartite system with three branches

Answer: (D)

Power is divided among three branches to prevent the concentration of authority and to create checks and balances. In the United States, the legislative branch makes laws, the executive branch enforces them, and the judicial branch interprets them. This three-branch structure, or tripartite system, captures how power is distributed and how each branch can constrain the others to keep government from becoming Tyrannical.

A bicameral legislature refers only to Congress having two houses, which is a feature of the legislative branch, not the whole system. A unitary system concentrates power in a central authority, not distributing it across separate branches. A confederation describes a loose union with weak central power. The tripartite system with three branches best describes the overall organization under separation of powers.