Question

Which is the main source of energy on earth?

• A. Coal
• B. Wood
• C. Water
• D. Sun

Hint:

Even fossil fuels store ancient solar energy captured by plants.

Answer 1

The Correct Option is D

Step 1: Core concept.
Almost all natural energy on Earth originates from the Sun—directly (solar energy) or indirectly (wind, water cycle, biomass, fossil fuels).
Step 2: Conclusion.
Hence, the Sun is the ultimate/main source of energy on Earth.