Correct Answer: B

Rationale: The Sun is the primary source of energy for Earth, driving nearly all natural processes, including climate, photosynthesis, and weather patterns. Solar radiation provides the light and heat necessary for sustaining life, influencing ocean currents, wind circulation, and the water cycle. Plants use solar energy to produce food, forming the base of the food chain. The Sun’s energy also fuels renewable technologies like solar power. Without the Sun, Earth would be a frozen, lifeless planet. Its consistent output ensures environmental stability and supports all biological and ecological systems.

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