National Biological Garden of India is situated in

Mumbai
Lucknow
New Delhi
Bengaluru

The correct answer is (c) New Delhi.

The National Botanical Research Institute (NBRI) is a premier research institute of the Indian Council of Agricultural Research (ICAR) located in New Delhi, India. It was established in 1956 as the Central National Herbarium and was renamed as the National Botanical Research Institute in 1966. The NBRI is one of the largest botanical research institutes in the world and has a mandate to conduct research in all aspects of botany, including taxonomy, systematics, floristics, ecology, phytochemistry, pharmacognosy, and economic botany. The NBRI also has a large collection of plant specimens, which is one of the largest in the world.

The NBRI has a number of research facilities, including a herbarium, a library, a museum, and a number of laboratories. The NBRI also has a number of outreach programs, including a botanical garden, a nature education center, and a number of publications.

The NBRI is a major center for botanical research and education in India. It has made significant contributions to the understanding of Indian flora and has developed a number of important plant products, including neem, tulsi, and ashwagandha. The NBRI is also a major center for training in botany and has trained a large number of scientists and students from India and abroad.

The NBRI is a member of the International Association for Plant Taxonomy (IAPT) and the International Association for Plant Taxonomy (IAPT). It is also a member of the Indian Botanical Society (IBS) and the Indian Society of Plant Physiology (ISP).

The NBRI is a major center for botanical research and education in India. It has made significant contributions to the understanding of Indian flora and has developed a number of important plant products. The NBRI is also a major center for training in botany and has trained a large number of scientists and students from India and abroad.