One of the reasons for having two legislative chambers in the governance structure of a country is to ensure the

Step 1: Analyze the question The question asks why a country would have a bicameral legislature (two chambers, such as Nigeria's Senate and House of Representatives). We need the reason that is specific to having two chambers.

Step 2: Explain the concept A bicameral legislature is a lawmaking body with two houses. The main reasons for it are:

• Thorough scrutiny of bills: a bill must pass through both chambers, so it is debated and reviewed twice. This reduces hasty or poorly drafted laws.
• Representation of different interests: in a federal state like Nigeria, the Senate gives equal representation to every state (3 senators each), while the House represents population size.
• Checks within the legislature: one chamber can balance the other, which prevents the abuse of power.

Step 3: Evaluate the options

• A. Executive is kept under check and control: This is a function of the legislature as a whole, even a unicameral one. It is not a reason specific to having two chambers.
• B. Powers of the lower chamber is suppressed: The aim is to balance the chambers, not to suppress one. This is incorrect.
• C. Strict control of the affairs of the state: This is vague and does not describe the purpose of bicameralism.
• D. Thorough scrutiny of legislation: Two chambers mean every bill is examined twice, which is the classic reason for a bicameral system. This is correct.

Step 4: Answer The correct answer is D. thorough scrutiny of legislation.

Tip: When you see "two chambers" or "bicameral" in an exam question, think "double check on laws". Phrases like "second look", "review of bills" and "avoiding hasty legislation" nearly always point to the right option.