The correct option is Barren Island.
Explanation
The Andaman and Nicobar Islands are an extension of the Arakan Yoma mountain range and are situated on a tectonic boundary. This region contains the only instances of volcanic landforms within Indian territory.
- Barren Island: Located in the Andaman Sea, approximately 135 km northeast of Port Blair, this is the only confirmed active volcano in India and South Asia. It is part of the volcanic arc that extends from Sumatra (Indonesia) to Myanmar. The volcano has erupted multiple times in recorded history, with recent activity observed in 2017.
- Narcondam Island: Also located in the Andaman Sea, this is a volcanic island but is classified as a dormant or extinct volcano. It does not exhibit active eruptions.
- Minicoy Island: This is the southernmost island of the Lakshadweep group. It is formed of coral deposits (atoll) and has no volcanic origin.
- Great Nicobar Island: This is the largest and southernmost island of the Nicobar group. While it is located in a seismically active zone, it is not a volcano itself.
Key Takeaway: Barren Island is the only active volcano in India, whereas Narcondam is a dormant volcano; both are situated in the Andaman and Nicobar archipelago.