Botanical Survey of India' at Kolkata is the centre for improving botanical knowledge and experimentation under the local Governments.
National Botanical Research Institute' (NBRI), Lucknow is a multi-disciplinary plant research centre of international repute, undertaking basic and applied for R&D programmes in strategically important areas of plant sciences.
'Forest Research Institute', Dehradun, is a premier institution under the 'Indian Council of Forest Research and Education' (ICFRE). The Institute caters to the research needs of the Indo-Gangetic plains of Punjab, Haryana, Chandigarh, Delhi and Western Uttar Pradesh, as well as the U.P. Himalayas.
'Indian Agricultural Research Institute', Delhi looks into crop improvement and sustained agricultural productivity in harmony with the environment.
So, the correct answer is option C.