Tank irrigation is most predominantly practiced in _?

Answer: [C] South India

Tank irrigation system is one of the important and oldest sources of irrigation in India. Southern parts of India, where average rainfall is around 700mm are noted for the intensity of tanks. There are about 127,000 tanks in the southern region consisting of Andhra Pradesh, Tamil Nadu and Karnataka states.

This question is a part of GKToday's Integrated IAS General Studies Module