Andaman and Nicobar Islands is a group of ______ islands/islets?

The correct option is 572.

The Andaman and Nicobar Islands is a union territory of India situated at the junction of the Bay of Bengal and the Andaman Sea. It consists of a large archipelago comprising 572 islands, islets, and rocks, which cover a total land area of approximately 8,249 square kilometers.
This archipelago is geographically divided into two main groups: the Andaman Islands to the north and the Nicobar Islands to the south. These two groups are separated by the Ten Degree Channel, which is a wide stretch of water lying on the 10° N parallel.

Out of the 572 islands, only about 38 are permanently inhabited by both indigenous tribes and settlers from the Indian mainland. Port Blair serves as the capital and the main entry point for the union territory.