Correct Option
(b) Korkai, Poompuhar, and Muchiri were prominent ancient South Indian ports crucial for maritime trade.
Korkai was a significant port of the Pandya kingdom, renowned for its pearl fisheries and active participation in overseas trade.
Poompuhar, also known as Kaveripattinam, served as a major port city for the Chola kingdom. It is extensively mentioned in Sangam literature and facilitated trade with regions like Southeast Asia and the Roman Empire.
Muchiri, or Muziris, was an important port of the Chera kingdom, located in present-day Kerala. It was particularly famous for its extensive spice trade and strong commercial links with the Roman world.
Incorrect Options
Option (a) capital cities: These locations were primarily known as major port cities and centers of trade, not as the capital cities of their respective ancient South Indian kingdoms.
Option (c) centers of iron-and-steel making: While ancient South India had advanced metallurgical practices, these specific sites were predominantly recognized for their maritime trade activities rather than as primary centers for iron and steel production.
Option (d) shrines of Jain Tirthankaras: Although Jainism had a presence in ancient South India, these locations were not primarily known as shrines dedicated to Jain Tirthankaras. Their significance stemmed from their role as bustling port cities facilitating trade.