Correct Option: C. Legislature Detailed Explanation: In Nigeria, the expenditure of public funds by the executive branch is primarily controlled by the legislature. This control is rooted in the principles of checks and balances, which are fundamental to democratic governance. Here’s a step-by-step breakdown of why the legislature is the correct answer:

1. Separation of Powers: The Nigerian government operates on the principle of separation of powers, which divides the government into three branches: the executive, the legislature, and the judiciary. Each branch has distinct functions and powers to prevent any one branch from becoming too powerful.
2. Role of the Legislature: The legislature, which consists of the National Assembly (comprising the Senate and the House of Representatives), is responsible for making laws, including those that govern public expenditure. The legislature has the authority to approve budgets and allocate funds for various government activities.
3. Budget Approval Process:
4. The executive branch, led by the President, prepares a budget proposal that outlines expected revenues and expenditures for the upcoming fiscal year.
5. This budget is then submitted to the legislature for review. The legislature examines the proposal, holds discussions, and may call for public hearings to gather input.
6. After thorough scrutiny, the legislature votes on the budget. Only after the legislature approves the budget can the executive branch legally spend public funds.
7. Oversight Function: Beyond just approving the budget, the legislature also has the power to oversee how public funds are spent. This includes:
8. Monitoring the implementation of the budget.
9. Conducting investigations into any misuse or misallocation of funds.
10. Holding the executive accountable for financial decisions.
11. Constitutional Mandate: The Nigerian Constitution explicitly grants the legislature the power to control public expenditure. This is a critical aspect of ensuring transparency and accountability in government spending.

Why Other Options Are Incorrect:

• A. Judiciary: The judiciary's primary role is to interpret laws and administer justice. While it can review the legality of government actions, it does not have the authority to control public expenditure. Its function is more about ensuring that laws are followed rather than managing financial resources.
• B. Ministry of Finance: The Ministry of Finance is responsible for managing the government's finances, including preparing the budget and implementing financial policies. However, it does not have the authority to approve expenditures. Its role is more administrative and advisory, working under the guidance of the legislature.
• D. President: The President, as the head of the executive branch, proposes the budget and can influence financial decisions. However, the President cannot unilaterally control public expenditure without the legislature's approval. The President's role is to execute the laws and policies established by the legislature, not to control them.

Revision Summary:

• The legislature (National Assembly) controls public expenditure in Nigeria through the budget approval process.
• The principle of separation of powers ensures that no single branch of government can dominate financial decisions.
• The legislature not only approves budgets but also oversees the implementation and accountability of public spending.
• The judiciary and the Ministry of Finance do not have the authority to control public expenditure, and the President's role is limited to proposing budgets.