The correct option is A (a) Natural history society of india
The Bombay Natural History Society announces the Sálim Ali Bird Count for the year 2017. This is a single-day event to commemorate the birth anniversary of the “Bird Man of India”, late Dr. Sálim Ali (1896–1987). The event will be held on 12 November 2017, which falls on his birthday. The only criterion for participation in the event is an interest in birds