The correct answer is b) Madurai.
Madurai was the capital of the Pandyan kingdom from the 3rd century BCE to the 13th century CE. It was a major center of trade and culture, and was known for its pearls, literary academies, and temples.
Kanchipuram was the capital of the Pallava kingdom from the 3rd to the 9th centuries CE. It was a major center of Hinduism and Buddhism, and is home to many temples.
Korkai was a port city on the Coromandel coast that was important in the ancient and medieval periods. It was known for its pearls and trade with the Roman Empire.
Uraiyur was a city in the Chola kingdom that was important in the early medieval period. It was the birthplace of the Chola kings and is home to many temples.