The power of the president to assent to bills is derived from the principle of
The correct answer is: E
Explanation
The power of the president to assent to bills is derived from the principle of separation of powers. This principle divides the government into three branches: the executive, the legislature and the judiciary, each with distinct powers and responsibilities. The president's role in assenting to bills is part of the executive branch's function, which checks and balances the legislative process. The president's assent is required for a bill to become law, ensuring a system of oversight within the separation of powers framework.