When you do math you are adding, rooting, graphing etc. When you are doing social studies you are studying people and population. It can also be about geography and how people live today. You are being social.
I believe the answer is <span>C. Several shoppers bought milk, and others bought bottled water.
Option A is wrong because it need a comma after the word 'Then'
Option B is wrong because the comma should be placed before the word 'But'
Option D is wrong because it does not need another comma after the word 'But'
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don't think about your feelings and don't let others influence your thoughts.
