The correct answer is C. Sonipat.
Surajkund is a town and a municipal council in Sonipat district in the Indian state of Haryana. It is located 30 kilometers (19 mi) north of Delhi, on the Grand Trunk Road. The town is known for its annual Surajkund Mela, a cultural festival held in February or March.
The Surajkund tourist complex is a popular tourist destination in Haryana. It is located on the banks of the Surajkund lake, which is a man-made reservoir. The complex has a number of attractions, including a replica of the Qutub Minar, a handicrafts emporium, and a food court.
The other options are incorrect. Faridabad is a city in Haryana, India. Gurugram is a city in Haryana, India. None of the above is a district of Haryana.