Which of the following is a major source of biomass fuel in developing countries?

• A. Natural gas
• B. Wood
• C. Petroleum
• D. Coal

Answer: (B)

Verified step by step guidance

1. Understand the concept of biomass fuel: Biomass fuel refers to organic materials derived from plants and animals that can be burned or converted into energy. Examples include wood, agricultural residues, and animal waste.
2. Recognize the context of developing countries: In many developing countries, access to advanced energy sources like natural gas, petroleum, and coal may be limited. Instead, they rely on readily available and renewable resources for energy.
3. Evaluate the options: Natural gas, petroleum, and coal are fossil fuels, not biomass fuels. Wood, on the other hand, is a renewable organic material and a common source of biomass fuel.
4. Consider the practicality: Wood is widely available in rural areas of developing countries and can be used directly for cooking, heating, and other energy needs, making it a major source of biomass fuel.
5. Conclude that wood is the correct answer based on its classification as a biomass fuel and its widespread use in developing countries.