Option b is the correct answer. The capital of the Kadamba kings was Vanavasi. The Kadamba dynasty was a royal family that ruled over parts of Karnataka and Goa from the 4th to the 6th century CE. They were founded by Mayurasharma, who rebelled against the Pallava rule and established his own kingdom. They were known for their architecture, art, literature, and administration. They were later conquered by the Chalukyas and Rashtrakutas.