MCAT Question of the Day
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    Q:

    		 A research study is developed to look at the link between alcohol use and lung cancer. A confounding variable that should be considered in this experimental design is:
    		 

    A

    		 type of alcohol consumed.

    B

    		 amount of alcohol consumed.

    C

    		 tobacco use.

    D

    		 age of lung cancer diagnosis.



    Experimental Methods |
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