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  1. Goosebumps are caused by contractions of the

    2. A.

     Muscles
    B.

     Nerves
    C.

     Bones
    D.

     All of the above

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    Answer : Option A

    Explanation :

    Goosebumps are caused by the contraction of the tiny arrectores pilorum muscles attached to hair follicles, according to Dr. Allan L. Lorincz, a dermatologist at the University of Chicago.

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