Correct Option: A. To give them a good grasp of their country before they all go abroad. Detailed Explanation:

1. Understanding the Context: Mr. Bepo, as a headmaster, is responsible for the educational development of his students. Organizing excursions is a common practice in schools to enhance learning experiences outside the classroom. The primary goal of these excursions is often to provide students with practical knowledge and a deeper understanding of their surroundings.
2. Why Option A is Correct:
3. Cultural Awareness: By organizing excursions, Mr. Bepo aims to instill a sense of cultural awareness and appreciation in his students. Understanding their own country is crucial before they venture abroad. This knowledge helps students develop a sense of identity and belonging, which is essential for their personal growth.
4. Real-World Learning: Excursions allow students to experience real-world applications of what they learn in the classroom. For instance, visiting historical sites, museums, or natural parks can provide insights into Nigeria's geography, history, and culture, which are vital for their overall education.
5. Preparation for Global Citizenship: As students prepare to travel abroad, having a solid understanding of their own country equips them with the ability to compare and contrast different cultures and environments. This preparation is essential for fostering global citizens who are aware of their roots and can engage meaningfully with the world.
6. Why the Other Options are Wrong or Weaker:
7. Option B: To promote Stardom as a school that values excursions: While promoting the school’s image is a potential benefit of organizing excursions, it is not the primary reason. The focus should be on the educational value and the students' learning experiences rather than merely enhancing the school's reputation.
8. Option C: To prepare students for geography exams: Although excursions can help with geography knowledge, the primary aim is broader than just exam preparation. Education is about holistic development, and excursions serve multiple educational purposes beyond just preparing for tests.
9. Option D: To encourage tourism in Nigeria: While encouraging tourism can be a positive outcome of excursions, it is not the main objective of Mr. Bepo's initiative. The focus is on student education and personal development rather than promoting tourism as a primary goal.

Summary of Key Points:

• Mr. Bepo organizes excursions primarily to enhance students' understanding of their own country.
• Excursions provide real-world learning experiences that foster cultural awareness and identity.
• The focus is on holistic education rather than just promoting the school or preparing for exams.
• Understanding one’s own culture is essential for students as they prepare to engage with the global community.

This thorough understanding of the reasons behind organizing excursions will help students appreciate the value of such educational experiences and their relevance to personal and academic growth.