The correct option for the question regarding which body advises the President of Nigeria on the sovereignty and territorial integrity of the country is A. National Security Council. Detailed Explanation

1. Understanding the Role of the National Security Council (NSC):
2. The National Security Council is a key advisory body in Nigeria that focuses on issues related to national security, including the sovereignty and territorial integrity of the nation. It is composed of the President, the Vice President, the National Security Adviser, and other relevant security and defense officials.
3. The NSC's primary function is to assess threats to national security and provide strategic advice to the President on how to address these threats. This includes military, intelligence, and diplomatic considerations that are crucial for maintaining the country's sovereignty.
4. Why the Other Options Are Incorrect:
5. B. National Defense Council: While this council also deals with defense matters, it is not the primary body that advises the President on issues of sovereignty and territorial integrity. The National Defense Council focuses more on military strategy and defense policy rather than the broader aspects of national security.
6. C. Council of State: This council is primarily an advisory body that includes former presidents, governors, and other key figures. It advises the President on various issues, but it does not specifically focus on national security matters. Its role is more about governance and policy rather than direct security threats.
7. D. Federal Executive Council: This council consists of ministers appointed by the President and is responsible for the administration of government policies. While it plays a role in governance, it does not specifically advise on matters of national security or territorial integrity.
8. Common Pitfalls:
9. Students may confuse the roles of these councils due to overlapping functions in governance. It is essential to understand that while all these bodies play significant roles in the administration of the country, their specific focus areas differ.
10. Another common mistake is assuming that all councils have equal authority in advising the President on security matters. The NSC is specifically designed for this purpose.

Revision Summary

• The National Security Council (NSC) is the correct body advising the President on sovereignty and territorial integrity.
• The National Defense Council focuses on military strategy, not directly on sovereignty.
• The Council of State advises on governance issues, lacking a specific focus on national security.
• The Federal Executive Council administers government policies but does not specialize in security matters.

By understanding the distinct roles of these councils, students can better navigate questions related to governance and national security in Nigeria.