Salarganj Gate is located in which district of Haryana?

The correct answer is C. Sonipat.

Salarganj Gate is a historical gate located in Sonipat district of Haryana, India. It was built in the 16th century by Sher Shah Suri. The gate is a part of the old city wall of Sonipat. It is a two-storeyed structure with a dome on top. The gate is made of red sandstone and is decorated with intricate carvings. It is one of the most important historical monuments in Sonipat.

Gurugram, Faridabad, and Panipat are also districts of Haryana. However, Salarganj Gate is not located in any of these districts.