Question

Which of these examples is a water-conservation technique that also reduces water pollution

A. Factories Making Printing Inks With Water Instead Of Chemical Solvents

B. Farmers Using Fewer Pesticides On Farm Fields

C. Factories Reusing Cooling Water Instead Of Returning It To A River

D. Farmers Planting Fields Of Coarse Grass That Filter Out Pollutant

Answer 1

The only example among these that is a water-conservation technique that also reduces water pollution is c) factories reusing cooling water instead of returning it to a river. 

Answer 2

The answer would be C. if factories reused water it would help conserve more water. also it would stop more from getting polluted