The correct answer is a-III, b-I, c-IV, d-II. Important Notes: +-------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Salsette | Located on the Western Coast of India, in the state of Maharashtra, this Island is one of the most densely populated islands in the world. The original seven islands of Mumbai, which were merged by these islands. | +-------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Sriharikota | Sriharikota is a barrier island in the Andhra Pradesh state of India. It is most famous as the home of India's only satellite launch center. Satish Dhawan Space Center, formerly known as Sriharikota Launching Range, of the ISRO (Indian Space Research Organization), was established at Sriharikota Island. | | Wellingdon | Wellingdon known after Lord Wellingdon who was a British Viceroy of India, Wellingdon Island is one of the largest artificial man-made islands in India which is located in the city of Kochi, Kerala. It is considered as the habitat for the port of Kochi and the Kochi Naval Base of the Indian Navy and Central Institute of Fisheries Technology. | | Wheeler | Dr. Abdul Kalam Island, formerly known as Wheeler Island, is located on the coast of Odisha. This island is considered one of the Country’s most advanced missile testing range. | +-------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+