The headquarters of the National Institute of Oceanography of India is located at :

Goa

The correct answer is Option (4) - Goa

The National Institute of Oceanography (NIO) is one of the premier oceanographic research institutions in India. It is dedicated to studying various aspects of the ocean, including marine biology, geology, chemistry, and physical oceanography. The institute conducts interdisciplinary research to understand ocean processes, marine ecosystems, and the role of the oceans in climate dynamics.