Correct Option: A Explanation of Why Option A is Correct: The Federal Government of Nigeria generates revenue from various sources, and understanding these sources is crucial for grasping the country's economic framework. Option A lists several key sources of revenue that are significant for the Nigerian government:

1. Import Duties: These are taxes imposed on goods brought into the country. They serve two purposes: generating revenue for the government and protecting local industries from foreign competition.
2. Petroleum: Nigeria is one of the largest oil producers in Africa, and petroleum is a major source of revenue. The government earns substantial income from the sale of crude oil and gas, which constitutes a significant portion of its total revenue.
3. Import Tax: Similar to import duties, these taxes are levied on goods imported into the country. They contribute to the government's revenue and help regulate trade.
4. Profit Tax: This refers to taxes on the profits earned by businesses operating within Nigeria. It is a critical source of revenue, especially from large corporations, including those in the oil sector.
5. Royalties: These are payments made to the government by companies for the right to extract natural resources, such as oil and minerals. They are a significant source of income for the government.
6. Government Dividends: These are earnings received from government-owned enterprises. The Nigerian government has stakes in various companies, and the dividends from these investments contribute to its revenue.

Why the Other Options Are Wrong or Weaker: Option B: Personal income tax, excise tax, and vehicle licenses - Personal Income Tax: While this is a source of revenue, it primarily contributes to state and local governments rather than the federal government. - Excise Tax: This is a tax on specific goods, such as alcohol and tobacco, and while it does contribute to federal revenue, it is not as significant as the sources listed in Option A. - Vehicle Licenses: These fees are typically collected at the state level and do not significantly contribute to federal revenue. Option C: Export duties, personal income tax, and royalties - Export Duties: Nigeria does not heavily rely on export duties as a source of revenue, especially since it is more focused on attracting foreign investment and trade. - Personal Income Tax: As mentioned, this is more relevant to state and local governments. - Royalties: While royalties are a valid source of revenue, the combination of sources in this option does not reflect the primary revenue streams for the federal government. Option D: Property income, sales tax, and excise tax - Property Income: This is not a major source of revenue for the federal government in Nigeria. - Sales Tax: This is typically collected by state governments rather than the federal government. - Excise Tax: As previously noted, while it contributes to revenue, it is not as significant as the sources in Option A. Summary of Key Points:

• The Federal Government of Nigeria's primary revenue sources include import duties, petroleum, import tax, profit tax, royalties, and government dividends.
• Option A encompasses the most significant and relevant sources of revenue for the federal government.
• Other options either focus on state-level revenues or include less significant sources for the federal government.
• Understanding these revenue sources is essential for analyzing Nigeria's economic structure and fiscal policies.