Correct Answer: (a) Malabar Coast
Solution:Kochi Sea-port (Kerala) is a graceful natural harbour located at Malabar Coast which is used for the whole year. Cochin Port, also known as Kochi Port, is a major port on the Arabian Sea-Laccadive Sea-Indian Ocean water route in the city of Kochi and one of India's largest ports. It is also India's first transhipment terminal. The port is located on two islands in Lake Kochi, Willingdon Island and Vallarpadam, near the Fort Kochi river mouth, which opens onto the Laccadive Sea. Kochi Port in Kerala is a tidal port. The port is often regarded as the natural entryway to South-West India's industrial and agricultural produce markets. Spices, tea, and coffee are exported. It is one of the shipbuilding centres.