The correct answer is C. Mahendragarh.
Tosham hills are located in Mahendragarh district of Haryana, India. They are a group of hills that are part of the Aravalli Range. The hills are known for their archaeological sites, which date back to the Indus Valley Civilization. The most famous site is the Tosham Rock, which is a large rock with a number of inscriptions on it. The inscriptions are in the Indus script, which is still not fully understood.
The Tosham hills are also a popular tourist destination. The hills offer stunning views of the surrounding countryside. There are a number of hiking trails in the hills, and there are also a number of temples and other historical sites to visit.
The other options are incorrect. Rohtak is a city in Haryana, India. Hisar is a city in Haryana, India. Bhiwani is a city in Haryana, India.