The famous ‘Rang Ghar’ was constructed in Assam during the reign of

The correct answer is: B. Rajeswar Singha

Rang Ghar is a large amphitheater located in Guwahati, Assam, India. It was built in the 17th century by the Ahom king Rajeswar Singha. The Rang Ghar was used for cultural and religious performances, and it is also known as the “Theatre of Assam”.

The Rang Ghar is a rectangular structure with a sloping roof. It is made of bricks and mortar, and it is decorated with terracotta tiles. The Rang Ghar is located on the banks of the Brahmaputra River, and it is a popular tourist destination.

The other options are incorrect because:

• Pramatta Singha was the Ahom king who ruled from 1603 to 1615. He did not build the Rang Ghar.
• Siv Singha was the Ahom king who ruled from 1679 to 1681. He did not build the Rang Ghar.
• Rudra Singha was the Ahom king who ruled from 1696 to 1714. He did not build the Rang Ghar.