Correct Option: B. Maize, cocoyam, and cassava Explanation of the Correct Answer The rainforest zone of Nigeria is characterized by a humid tropical climate, which includes high rainfall, high humidity, and warm temperatures throughout the year. This environment is particularly suitable for the cultivation of certain crops that thrive in such conditions.

1. Maize (Zea mays):
2. Maize is a staple food crop in Nigeria and is well-suited to the rainforest zone due to its adaptability to various soil types and its requirement for warm temperatures and adequate moisture. The high rainfall in the rainforest zone supports the growth of maize, making it a common crop in this region.
3. Cocoyam (Colocasia esculenta):
4. Cocoyam is another crop that thrives in the humid conditions of the rainforest. It requires a lot of moisture and is often grown in areas with good drainage. Cocoyam is a significant source of carbohydrates and is widely consumed in Nigeria.
5. Cassava (Manihot esculenta):
6. Cassava is a drought-tolerant crop that can also thrive in the humid conditions of the rainforest. It is a major source of carbohydrates and is cultivated extensively in Nigeria. The crop is resilient and can grow in poor soils, making it a staple in many farming systems in the rainforest zone.

Why the Other Options Are Incorrect A. Millet, yam, and coconut: - Millet: This crop is more suited to arid and semi-arid regions rather than the humid rainforest zone. It requires less moisture and is typically grown in the northern parts of Nigeria. - Yam: While yam can be grown in the rainforest zone, it is not as predominant as maize, cocoyam, and cassava. It requires specific soil conditions and is often cultivated in areas with less rainfall. - Coconut: While coconuts can grow in coastal areas, they are not a primary crop in the rainforest zone of Nigeria. They require sandy soils and are more commonly found in tropical coastal regions. C. Sorghum, sweet potato, and date: - Sorghum: Similar to millet, sorghum is better suited for drier climates and is primarily grown in the northern regions of Nigeria. - Sweet potato: While sweet potato can grow in various conditions, it is not as commonly cultivated in the rainforest zone compared to maize, cocoyam, and cassava. - Date: Dates are typically grown in arid regions and are not suited for the humid conditions of the rainforest. D. Wheat, Irish potato, and groundnut: - Wheat: This crop requires a temperate climate and is not suitable for the humid rainforest zone. It is primarily grown in the northern regions of Nigeria. - Irish potato: Similar to wheat, Irish potatoes thrive in cooler climates and are not commonly cultivated in the rainforest zone. - Groundnut (peanut): Groundnuts are typically grown in drier regions and are not a major crop in the rainforest zone. Summary of Key Points

• The rainforest zone of Nigeria is characterized by high humidity and rainfall, making it suitable for certain crops.
• Maize, cocoyam, and cassava are the primary crops cultivated in this region due to their adaptability to the humid environment.
• Other options include crops that are better suited for drier climates or are not as commonly grown in the rainforest zone.

Revision Summary

• The rainforest zone supports crops like maize, cocoyam, and cassava due to high moisture and warm temperatures.
• Millet and sorghum are better suited for arid regions, while wheat and Irish potatoes prefer cooler climates.
• Understanding the climatic requirements of crops is essential for successful cultivation in specific regions.