National Bio-diversity Authority is located at

Answer: Option B

National Biodiversity Authority is located in Chennai.
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 to implement the provisions under the Biological Diversity Act, 2002.
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.”