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

Answer: Option D

The 'Rang Ghar' is a historic structure located in Assam, India. It is an amphitheater-like structure and is one of the oldest surviving amphitheaters in Asia. The 'Rang Ghar' was constructed during the Ahom dynasty's rule in Assam. Let's identify the ruler associated with its construction:

Option A: Pramatta Singha
Pramatta Singha was an Ahom king who ruled in the 18th century. The 'Rang Ghar' predates his reign.
Option B: Rajeswar Singha
Rajeswar Singha was an Ahom king who ruled in the 18th century. The 'Rang Ghar' predates his reign.
Option C: Siv Singha
Siv Singha was an Ahom king who ruled in the 18th century. The 'Rang Ghar' predates his reign.
Option D: Rudra Singha
Rudra Singha was an Ahom king who ruled in the 17th century. The 'Rang Ghar' was constructed during his reign.
So, the correct answer is Option D: Rudra Singha. The famous 'Rang Ghar' was constructed in Assam during the reign of King Rudra Singha of the Ahom dynasty.