The correct answer is: a) Kamarupa Kingdom.
The Varman dynasty was an important ruling dynasty of the Kamarupa Kingdom in northeastern India. The dynasty ruled from the 3rd to the 13th centuries CE. The Varmans were known for their patronage of art and literature. They also built many temples and monasteries.
The Pala dynasty was a ruling dynasty of Bengal in northeastern India. The dynasty ruled from the 8th to the 12th centuries CE. The Palas were known for their patronage of Buddhism. They also built many temples and monasteries.
The Ahom kingdom was a kingdom in northeastern India that ruled from the 13th to the 19th centuries CE. The Ahoms were a Shan people who migrated from present-day Myanmar. They were known for their military prowess and their resistance to the Mughal Empire.
The Kachari kingdom was a kingdom in northeastern India that ruled from the 13th to the 19th centuries CE. The Kacharis were a Bodo people who migrated from present-day Bhutan. They were known for their art and architecture.