The correct option is D.
Water conservation have to do with all the efforts that are made by individuals, government and organisations to ensure that water resources are well managed and preserved for present and future humans' use. The chip manufacturing company in the question given above can ensure water preservation by using non toxic chemicals that will not harm the aquatic environment where they will eventually discharge their wastes. And in case, the wastes of this company are buried, it can affect the water table of the community where the company is located if the wastes contain toxic materials.
