National Bio-diversity Board is situated at

Answer: Option B

The National Biodiversity Authority (NBA) is a statutory autonomous body under the Ministry of Environment, Forests and Climate Change, Government of India established in 2003, and Headquartered in Chennai, India.
It acts as a facilitating, regulating and advisory body to the Government of India on issues of conservation, sustainable use of biological resources and fair and equitable sharing of benefits arising out of the use of biological resources.