The Zoological Survey of India (ZSI), with its headquarters in ___________, and having presence in 16 regional stations, is responsible for surveying the faunal resources of India. ​

Correct option is A

​The correct answer is (a) ​Kolkata

Explanation: 

The Zoological Survey of India (ZSI), which is a premier research organization under the Ministry of Environment, Forest and Climate Change of the Government of India, has its headquarters in Kolkata, West Bengal.

Key Details about ZSI:

• Founded: 1916 Headquarters: Kolkata, West Bengal
• Purpose: The main objective of the ZSI is to promote the survey, exploration, and research in the field of zoology and to document the diversity of the fauna (animal life) of India.
• Functions: The ZSI conducts taxonomic and faunal surveys, studies the distribution of various species, and provides data for conservation efforts and environmental management.