In federalism system of Government currency, Armed forces and National defense is the primary function of

Analyze the question: The question asks which body or arrangement has currency, armed forces and national defense as its primary function or responsibility in a federal system.

Explain the concept: In a federal system, powers are shared between the central (federal) government and the component units (states/regions). The constitution divides these powers into lists:

• Exclusive Legislative List: Matters only the federal government can legislate on. Examples are defense, currency and coinage, foreign affairs, citizenship, immigration, and the armed forces.
• Concurrent List: Matters both federal and state governments can handle, such as education, health and agriculture.
• Residual List: Matters left to the states (in some federations).

Step-by-step solution:

1. Currency, armed forces and national defense are matters of national importance. They need uniformity across the whole country.
2. Only the federal government can handle them. A state or local government cannot print its own money or raise its own army.
3. Check the options: • A. Local government Chairman: Wrong. Local governments handle local matters like markets and primary-level services, not national defense. • B. Armed Forces Ruling Council: Wrong. This was a military-era governing body, not a constitutional feature of federalism. • C. Security and Exchange Commission: Wrong. It regulates the capital market and stock exchange, not currency or the armed forces. • D. Exclusive list: Correct. These items are on the Exclusive Legislative List, reserved for the federal government.

Answer: The option that fits is D. Exclusive list.

Tip: Remember the phrase "Defense, Currency, Foreign affairs = Exclusive (federal only)". When a JAMB question mentions national-level functions like defense, currency, or immigration in a federal system, think "Exclusive List."