The correct answer is: A. 110 mm.
The mean annual rainfall in India is 110 mm. This means that, on average, every square meter of land in India receives 110 mm of rain each year. This is equivalent to about 4.3 inches of rain.
The mean annual rainfall varies from place to place in India. The wettest parts of India are the Western Ghats and the Eastern Himalayas, where annual rainfall can exceed 3,000 mm (118 inches). The driest parts of India are the Thar Desert and the Rann of Kutch, where annual rainfall can be less than 100 mm (3.9 inches).
The mean annual rainfall is important because it affects the climate and the vegetation of India. The wettest parts of India are covered in forests, while the driest parts are covered in deserts. The mean annual rainfall also affects the agriculture of India. The wettest parts of India are well-suited for growing rice, while the driest parts are well-suited for growing wheat.