Bicameralism is necessary in a federal state to demonstrate that __________

Analyze the question: It asks why a two-chamber legislature (bicameralism) is needed in a federal state.

Concept: Bicameralism means a legislature with two houses: an upper house (e.g., the Senate in Nigeria) and a lower house (e.g., the House of Representatives). A federal state is made up of component units (states, regions, provinces) that share power with the central government. To protect these units, the upper house usually gives each unit equal representation, regardless of its size or population. The lower house is based on population.

Step-by-step solution:

• A. The executive is adequately represented: Wrong. The legislature is not meant to represent the executive. That would breach the separation of powers.
• B. Localized interests receive adequate representation: Correct. The upper house ensures that each state or region, including smaller ones, has a voice at the centre. This protects local interests from being swamped by the more populous units.
• C. Representation in the upper house is based on population: Wrong. Population is the basis for the lower house. The upper house is typically based on equality of units (Nigeria has 3 senators per state, regardless of size).
• D. Representation of the rich is taken care of: Wrong. Federal legislatures do not represent people by wealth.

Answer: B. Localized interests receive adequate representation.

Tip: Remember "Upper house = Units, Lower house = Lots of people." If a question links bicameralism with federalism, think of equal representation of component units and protection of local or minority interests.