The correct answer is D. 1978.
The Salim Ali Bird Sanctuary is a bird sanctuary located in the city of Bharatpur, Rajasthan, India. It was established in 1978 and is named after the Indian ornithologist Salim Ali. The sanctuary is spread over an area of 1,371 hectares (3,390 acres) and is home to a variety of birds, including flamingos, pelicans, herons, storks, and egrets. It is also a popular tourist destination.
Option A is incorrect because the Salim Ali Bird Sanctuary was established in 1978, not 1980.
Option B is incorrect because the Salim Ali Bird Sanctuary was established in 1978, not 1988.
Option C is incorrect because the Salim Ali Bird Sanctuary was established in 1978, not 1990.