The correct answer is: Jhajjar.
Sultanpur National Park is a bird sanctuary located in Jhajjar district of Haryana, India. It is about 30 km from Delhi and is a popular tourist destination for birdwatching. The park is home to a variety of birds, including flamingos, pelicans, herons, storks, and egrets. It is also home to a variety of other animals, including deer, rabbits, and snakes.
The park was established in 1972 and is spread over an area of 1,000 hectares. It is a Ramsar site, a wetland of international importance. The park is also a part of the Central Asian Flyway, a major migratory route for birds.
The park is open to visitors from sunrise to sunset. There is an entrance fee for the park. Visitors can take a boat ride on the lake, go for a walk in the park, or simply sit and enjoy the birdwatching.
The park is a great place to relax and enjoy nature. It is also a great place to learn about birds and other wildlife.
The other options are incorrect because:
- Gurgaon is a city in Haryana. It is not a district.
- Rohtak is a district in Haryana. It is not home to Sultanpur National Park.
- Rewari is a district in Haryana. It is not home to Sultanpur National Park.