Explanation: The Andaman and Nicobar Islands are a group of islands located in the Bay of Bengal, forming a Union Territory of India. This archipelago is known for its rich biodiversity, unique geographical features, and strategic importance. Among these islands, Barren Island stands out due to its active volcano, which is the only active volcano in India.
Barren Island, located in the northern part of the Andaman and Nicobar Islands, has been active since the 18th century. The most recent eruption occurred in 2017, and the volcano continues to exhibit signs of activity. This makes Barren Island a significant site for geological studies and a unique feature in the Indian landscape.
The presence of an active volcano in the Andaman and Nicobar Islands is a result of the region's geological setting. The islands are part of the Andaman and Nicobar Ridge, which is a volcanic arc formed by the subduction of the Indian Plate beneath the Burma Plate. This tectonic activity has led to the formation of volcanoes, with Barren Island being the most prominent example.
Understanding the geographical and geological features of the Andaman and Nicobar Islands is crucial for students of geography and environmental science. The active volcano on Barren Island not only adds to the region's natural beauty but also provides valuable insights into volcanic activity and its impact on the environment. This knowledge is essential for students preparing for competitive examinations such as the UPSC Civil Services and State PSC Exams, where questions on Indian geography and natural features are common.
In conclusion, the Andaman and Nicobar Islands are the correct answer as they are home to India's only active volcano, located on Barren Island. This unique geographical feature makes the Andaman and Nicobar Islands a significant site for both scientific research and tourism.