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Q: Exposure to sunlight helps a person improve his health because

  • 1
    the infrared light kills bacteria in the body
  • 2
    resistance power increases
  • 3
    the pigment cells in the skin get stimulated and produce a healthy tan
  • 4
    the ultraviolet rays convert skin oil into Vitamin D
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Answer : 4. "the ultraviolet rays convert skin oil into Vitamin D"

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