Fearing contamination of the stream, you decide it would be wise to use some form of disinfection before drinking the water. The nearest town has only a grocery store, pharmacy, and post office. What might you purchase? Why?

pharmacy

Explanation:

When fearing that the stream water might be infected or not fit for drinking you might want to check the quality content of the water before drinking. Thus use chlorine in the water that checks and prevents the water from polluted and is used as a disinfectant.

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