The correct answer is: b) Varman Dynasty.
The Varman Dynasty was a Hindu dynasty that ruled parts of Assam from the 4th to the 12th centuries. Their capital was at Hadapeshwar (modern-day Tezpur). The Varmans were patrons of art and literature, and their rule was a time of great cultural and economic prosperity in Assam.
The Pala Dynasty was a Buddhist dynasty that ruled parts of Bengal and Bihar from the 8th to the 12th centuries. Their capital was at Gaur. The Palas were patrons of Buddhism, and their rule was a time of great religious and cultural development in Bengal.
The Mlechchha Dynasty was a Hindu dynasty that ruled parts of Assam from the 12th to the 13th centuries. Their capital was at Kamarupa. The Mlechchhas were a foreign dynasty that invaded Assam from the north. Their rule was a time of great political instability and economic decline in Assam.
The Salastambha Dynasty was a Hindu dynasty that ruled parts of Odisha from the 7th to the 11th centuries. Their capital was at Bhubaneswar. The Salastambhas were patrons of Hinduism, and their rule was a time of great religious and cultural development in Odisha.