Which of the following is geographically closest to Great Nicobar?

1. Great Nicobar is the southernmost island of the Nicobar Islands archipelago, belonging to India. 2. We need to determine which of the given options is geographically closest to Great Nicobar. 3. Sumatra (an Indonesian island) lies directly south of the Nicobar Islands. The distance between Indira Point on Great Nicobar and the northern tip of Sumatra is relatively small (around 150 km). 4. Borneo and Java are other Indonesian islands located much farther to the east and southeast of Great Nicobar. 5. Sri Lanka is an island nation located significantly to the west-southwest of Great Nicobar. 6. Comparing the distances, Sumatra is clearly the closest landmass among the options to Great Nicobar.