Match List I with List II and select the correct answer using the code

Match List I with List II and select the correct answer using the code given below the Lists :

List I
(Island)
List II
(Location)
A. Continental island1. Mauritius
B. Coral island2. Madagascar
C. Volcanic island3. Andaman and Nicobar islands
D. Mountain island4. Maldives
A-2, B-4, C-1, D-3
A-2, B-1, C-4, D-3
A-3, B-1, C-4, D-2
A-3, B-4, C-1, D-2
This question was previously asked in
UPSC NDA-1 – 2015
Let’s match the types of islands with their examples:
A. Continental island: These are islands that were formerly part of a continent and became detached due to changes in sea level, geological uplift, or separation of landmasses. Madagascar is a classic example of a continental island that broke away from Africa. So, A matches with 2.
B. Coral island: These islands are formed from the accumulation of coral skeletons and associated organic material. Maldives is an archipelago of coral atolls, making it a prime example of a coral island chain. So, B matches with 4.
C. Volcanic island: These islands are formed by volcanic activity, either from underwater volcanoes reaching the surface or continental volcanic activity. Mauritius was formed by volcanic activity. So, C matches with 1.
D. Mountain island: This term can refer to islands that are essentially the peaks of submerged mountain ranges or fold mountains. The Andaman and Nicobar Islands are believed to be the northern extension of the Arakan Yoma mountain range of Myanmar, making them mountain islands. So, D matches with 3.
Putting it together: A-2, B-4, C-1, D-3. This matches option A.
Islands are classified based on their formation process: Continental islands separated from continents, Coral islands built by coral polyps, Volcanic islands formed by volcanoes, and Mountain islands representing submerged mountain peaks.
Other examples: Great Britain is a continental island. Lakshadweep in India is also a coral island group (atoll). Hawaii is a famous example of a volcanic island chain. Indonesia and Japan are archipelagos largely made up of volcanic islands.