One of the major problems of manufacturing industries in Tropical Africa is

Step 1: Analyze the question The question asks for a major problem facing manufacturing industries in Tropical Africa. We need the option that describes a real challenge, not an advantage.

Step 2: Concept Manufacturing in Tropical Africa is held back by several factors:

• Inadequate capital and poor technology
• Poor transport and unreliable power supply
• Small local markets because of low purchasing power
• Shortage of skilled labour
• Irregular or inadequate supply of raw materials, since many industries depend on agriculture or mining that is poorly developed or seasonal

Step 3: Evaluate each option

• A. High quality of industrial labour: This is not a problem, and it is untrue for the region. The usual issue is a shortage of skilled labour.
• B. High cost of labour: Labour in Tropical Africa is generally cheap and abundant, so this is not a major problem.
• C. Inadequate raw materials: Many industries struggle with insufficient or inconsistent supplies of raw materials, such as low agricultural output, seasonal supply, and poor processing or mining.
• D. Overproduction of manufactured goods: The region's industries often produce too little and the region imports many goods, so overproduction is not the problem.

Step 4: Answer The correct option is C. inadequate raw materials.

Tip: In "problems of industries in Africa" questions, eliminate options that sound like advantages (high-quality labour) or contradict the region's reality (expensive labour, overproduction). Look for words like inadequate, poor, low, or shortage. These usually point to the correct answer.