please help me out????

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Tutor: None Selected Time limit: 1 Day

Question 1.1. Which sentence has the comma in the correct place? (Points : 1)

       
       

May 6th, 2015

In theory, the dark smoke from the burning oil wells absorbs sunlight and the surrounding air is heated


     
there is no comma before and 

May 6th, 2015

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May 6th, 2015
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