Which ruler did many reforms in Nalagarh?

The correct answer is: B. Ishwar Singh

Ishwar Singh was the ruler of Nalagarh from 1783 to 1815. He was a great reformer and made many changes to the state. He built roads, schools, and hospitals. He also introduced new agricultural methods. He was a popular ruler and is remembered for his reforms.

Gulam Kadir Khan was the ruler of Nalagarh from 1758 to 1783. He was a cruel ruler and is not remembered for his reforms.

Gulab Ram Nadda was the ruler of Nalagarh from 1815 to 1840. He was a good ruler but did not make as many reforms as Ishwar Singh.

Narottam was the ruler of Nalagarh from 1840 to 1857. He was a weak ruler and is not remembered for his reforms.