The correct answer is: C. Sirsa.
Pt. Deendayal Sharma established Sanatan Dharma Sabha at Sirsa in 1923. The Sanatan Dharma Sabha was a Hindu nationalist organization that was founded to promote Hindu values and culture. The organization was active in the independence movement and played a role in the partition of India.
The other options are incorrect. Hisar is a city in Haryana that is located in the northern part of the state. Rohtak is a city in Haryana that is located in the central part of the state. Rewari is a city in Haryana that is located in the southern part of the state.