The correct answer is b) Vanchi.
The Chera dynasty was a major power in southern India from the 3rd century BCE to the 12th century CE. Their capital was located at Vanchi, which is now known as Kodungallur in Kerala. Vanchi was a major port city and a center of trade and commerce. It was also a center of learning and culture. The Chera kings were patrons of the arts and literature. They built many temples and palaces in Vanchi.
Muziris was another important port city of the Chera dynasty. It is now known as Kodungallur in Kerala. Muziris was a major center of trade and commerce between India and the Roman Empire. It was also a center of Christianity in India.
Quilon was another important port city of the Chera dynasty. It is now known as Kollam in Kerala. Quilon was a major center of trade and commerce between India and the Arab world. It was also a center of Hinduism in India.
Mahodayapuram was the capital of the Chola dynasty. It is now known as Thanjavur in Tamil Nadu. Mahodayapuram was a major center of trade and commerce, learning, and culture. The Chola kings were patrons of the arts and literature. They built many temples and palaces in Mahodayapuram.