Which one of the following is responsible for the Sustenance of ground water?
B
Diversion for high water demanding crops
C
Pollution from urban wastes
Correct option is D. Afforestation
Sustenance of the ground water means the maintenance of groundwater, which can be achieved by afforestation.
Afforestation is the process of planting trees. Trees roots and trunks will form a barrier for run-off water, it will help seepage of water thus, increasing the ground water level.
Thus, 'Afforestation' is responsible for the sustenance of ground water.