The correct option is C All of the above
Accumulated waste which is left untreated and uncared is harmful to the environment as it starts degrading in the open atmosphere by the action of microorganisms, some of the waste is eaten by stray animals which causes a problem in their functions as it consists of harmful elements such as acids, polythene, etc. The foul smell generating out of accumulated waste cause breathing problem in humans and air pollution. This waste dissolves in water bodies and form part of land making soil unusable and infertile and water harmful for drinking.