The correct answer is B. Mewat.
Mewat is a district in the Indian state of Haryana. It is located in the southern part of the state, and is bordered by the districts of Gurgaon, Rewari, Bhiwani, and Faridabad. The district has a population of over 1.5 million people, and its headquarters is the town of Nuh.
Mewat is a largely rural district, with agriculture being the main source of income for most people. The district is also home to a number of small industries, including textiles, leather goods, and food processing.
Mewat is a beautiful district with a rich history and culture. The district is home to a number of historical monuments, including the tombs of the Mughal emperors Akbar and Jahangir. Mewat is also home to a number of temples and mosques, as well as a number of shrines dedicated to Sufi saints.
The district of Mewat does not have any railway lines. The nearest railway station to Mewat is the Rewari railway station, which is located about 50 kilometers from Nuh.
The other options are incorrect because they are all districts in Haryana that have railway lines.