The correct option is D 1000 mm
In a remote backward village of Gendathur, situated in Mysore, Karnataka, where the annual precipitation is 1,000 millimetres. The villagers have installed the rooftop rainwater harvesting system to meet their water needs. When the rain falls, the water gets accumulated on the roofs of houses. This accumulated water is then carried all the way down through runoff pipes, where it is stored in an underground water tank.