The correct answer to this question is alternative B)"Nations fought to control the islands to use them as supply and refueling stations for ships at sea."
Nations wanted to make sure they controlled the islands in order to have them as supply stations at sea. They could indeed use them to refuel, to equip their ships, and expand their domination of the seas. Also, island nations could provide natural resources to the main land.
Two key events led to its being named the Negro National Anthem: In 1905, Booker T. Washington endorsed it, and in 1919, it became the official song of the NAACP.