The Planning commission of India has divided India into how many Agro-climatic Zones?

Correct option is A

The Planning Commission, as a result of the mid-term appraisal of the planning targets of the Seventh Plan, has divided the country into fifteen broad agro-climatic zones based on physiography, soils, geological formation, Climate, cropping patterns, and development of irrigation and mineral resources for broad agricultural planning and developing future strategies. These are further divided into more homogeneous 72 sub-zones. Fourteen regions were in the main land and the remaining one in the islands of Bay of Bengal and the Arabian Sea. 
The main objective was to integrate plans of the agro-climatic regions with the state and national plans to enable policy development based on techno-agro-climatic considerations. In the agro-climatic regional planning, further sub-regionalization was possible based on agro-ecological parameters.