The correct answer is Rohtak.
Rohtak was one of the first cities in Haryana to see a major uprising during the Revolt of 1857. The uprising was led by a local leader named Kunwar Singh. Singh was a descendant of the Chauhan Rajputs, a warrior clan that had ruled over much of northern India in the 12th and 13th centuries. He was a charismatic leader who was able to rally a large following of peasants and soldiers.
The uprising began on May 10, 1857, when Singh’s forces attacked the British garrison at Rohtak. The British were caught off guard and were quickly overwhelmed. Singh’s forces then went on to capture several other towns and villages in the region.
The British were eventually able to suppress the uprising, but it had a profound impact on the history of Haryana. It showed that the people of the region were not willing to accept British rule without a fight. It also led to the rise of a new generation of leaders who would eventually lead the fight for independence from British rule.
The other options are incorrect because they were not major centers of the uprising. Hisar was a small town at the time and did not see much fighting. Ambala was a British garrison town and was not attacked by the rebels. Gurgaon was also a small town and did not play a major role in the uprising.