Correct Option: B

Sultanpur National Park is located at Sultanpur, Haryana in Gurgaon District, Haryana. As a bird sanctuary it was the finding of Peter Jackson, famous ornithologist, and Honorary Secretary of the Delhi Birdwatching Society, who wrote to Prime Minister of India, Indira Gandhi, founder of the Society, in 1970 about the need to declare the Sultanpur jheel near Delhi, a bird sanctuary, and she asked him to take her there.