The correct answer is (b). The Indian National Centre for Ocean Information Services (INCOIS) is the Tsunami Warning Center in India. It is located in Vishakhapatnam, Andhra Pradesh. INCOIS is a national institute under the Ministry of Earth Sciences, Government of India. It was established in 1998 with the objective of providing oceanographic services to the country. INCOIS has a network of oceanographic observatories along the Indian coast and in the Indian Ocean. It also has a tsunami warning system that is capable of detecting and warning of tsunamis in the Indian Ocean.
The other options are incorrect. Chennai is the capital of Tamil Nadu. Hyderabad is the capital of Telangana. Port Blair is the capital of the Andaman and Nicobar Islands.