The correct answer is the 10° channel. Explanation & Key Takeaways: • The Ten Degree Channel, which is about 90 miles (145 kilometers) wide, separates Andaman and Nicobar Islands in the south. • The union territory of India's Andaman and Nicobar Islands is made up of two groups of islands off the coast of the Bay of Bengal. • Between Myanmar (Burma) and the Indonesian island of Sumatra, the peaks of a submerged mountain range, the Andaman Islands, and their southern neighbors, the Nicobar Islands, form an arc extending 620 miles (1,000 km) southward. • The arc marks the western border of the Bay of Bengal and the eastern border of the Andaman Sea. • Port Blair is the territorial capital (on South Andaman Island). • The islands are home to the Andaman and Nicobar Command, the Indian Armed Forces' only tri-service geographical command. • According to the 2011 Indian Census, the Union Territory of Andaman and Nicobar Islands had a population of 379,944, with 202,330 men (53.25 percent) and 177,614 women (46.75 percent). • There were 878 females for every 1,000 males. The Nicobar Islands are home to just 10% of the population.