Correct Answer: (a) Sumatra nai benditnom
Solution:Great Nicobar is the southernmost island of India located between 6°45' N - 7°15' N and 93°37' E - 93°56' E. This is approximately 480 km away from Port Blair. Indonesian island Sumatra is geographically closest to Great Nicobar as compare to Borneo, Java and Sri Lanka. Java is an island of Indonesia to the south of Sumatra. Borneo is located to the east of Sumatra.