In an area the water bodies are very contaminated. which disease is more likely to affect people of such area?

Question: In an area the water bodies are very contaminated. which disease is more likely to affect people of such area?

(1)typhoid and polio
(2)dysentery
(3)cholera
(4)all of these

Answer (4) is absolutely right answer because we know that in an area the water bodies are very contaminated then disease is more likely to affect people is all of these.

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