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      Question

      What is the primary source of the Sun’s

      energy?
      A Chemical reactions Correct Answer Incorrect Answer
      B Nuclear fusion Correct Answer Incorrect Answer
      C Gravitational contraction Correct Answer Incorrect Answer
      D Radioactive decay Correct Answer Incorrect Answer

      Solution

      The Sun’s energy is generated by nuclear fusion, where hydrogen nuclei combine to form helium, releasing vast amounts of energy.

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