Correct Answer: (a) New Delhi
Solution:To arrest the degradation process and for scientific and sustainable management of the resources, Desert Afforestation Research Station was established in 1952 at Jodhpur. This was later expanded into Desert Afforestation and Soil Conservation Station in 1957, and finally upgraded to Central Arid Zone Research Institute (CAZRI) in 1959 under Indian Council of Agricultural Research, New Delhi. The CAZRI operates through Six Divisions, located at the headquarters in Jodhpur. There are five Regional Research Stations located in different agro-climatic zones (Bikaner, Pali, Jaisalmer, Bhuj and Leh) to work on location-specific problems.