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  1. #1
    NewHopeR is offline Senior Member
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    Default Which one is correct?

    1) Experts are not sure what causes SAD, but they think it may be caused by a lack of sunlight.

    2)Experts are not sure what causes SAD, but they think it may be caused by the lack of sunlight.

    3) Experts are not sure what causes SAD, but they think it may be caused by lack of sunlight.

  2. #2
    Rover_KE is offline Moderator
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    Default Re: Which one is correct?

    SAD means seasonal affective disorder and all your sentences are correct.

    A better title would have been lack of sunlight.

    Rover

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