The power of the president to assent to bills is derived from the principle of

Analyze the question: It asks which principle gives the president the power to assent to (sign) bills passed by the legislature.

Explain the concept:

• Separation of powers divides government into three arms: the legislature (makes laws), the executive (implements laws), and the judiciary (interprets laws).
• Checks and balances lets each arm limit the powers of the others, so that no single arm becomes too powerful.

Step-by-step solution:

1. The legislature (National Assembly) passes a bill. That is its law-making function.
2. The bill does not become law automatically. It goes to the president for assent.
3. By assenting or withholding assent (a veto), the president, who heads the executive, checks the legislature's work.
4. The legislature can in turn check the president. It can override a veto with a two-thirds majority.

This power to review and restrain another arm's action is a typical example of checks and balances.

Why not the other options?

• B. Fundamental freedom: this concerns citizens' rights, not relations between arms of government.
• C. Political equality: this means equal political rights for citizens.
• D. Rule of law: this means everyone is subject to the law and nobody is above it.
• E. Separation of powers: this is a close distractor. It explains the division of functions, but the president's involvement in lawmaking is an overlap between the arms, and that overlap is what checks and balances describes. Strict separation would keep the president out of the legislative process entirely.

Answer: A. Checks and balances

Exam tip: When you see the executive acting on legislative work (assent, veto), or the legislature acting on executive work (approving ministers, impeachment), think checks and balances. When the question is only about the division of functions among the arms, think separation of powers.