The correct answer is: a) Handling bulk cargo.
Ennore Port and Kamarajar Port are important for handling bulk cargo. They are both major ports in India, and they handle a large amount of cargo each year. Bulk cargo is cargo that is not packed in containers, such as coal, iron ore, and grain. These ports are important for the Indian economy, as they help to move goods around the country and the world.
Option b) is incorrect because container traffic is handled by container ports, such as Jawaharlal Nehru Port Trust (JNPT) and Mundra Port.
Option c) is incorrect because passenger transport is handled by airports and railway stations.
Option d) is incorrect because defense purposes are handled by military bases and shipyards.