A) Only (i) and (ii)
B) Only (ii) and (iii)
C) Only (i), (ii), (iii)
D) (i), (ii) and (iii)
Correct Answer: D
Solution :
The methods that can be used to control water pollution are: (i) Avoiding the use of chemical substances freely. (ii) Educating society about the dangers of water pollution. (iii) Using biological control in agricultural areas instead of using pesticides.
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