Explanation:
The Arctic is the northernmost region of Earth. Most scientists define the Arctic as the area within the Arctic Circle, a line of latitude about 66.5° north of the Equator. Within this circle are the Arctic ocean basin and the northern parts of Scandinavia, Russia, Canada, Greenland, and the U.S. state of Alaska.
Well, since people used to use it to sail and explore areas on water, it would have to be,
C. To sail a ship from Africa to South America
-Mabel <3
The hottest layer of the earth is the mantle
