I believe that the question came with some options, one of which is the Gulf of Mexico - and the Gulf of Mexico is the correct answer (it is located much further to the South, away from Canada).
Other bodies of water, such as the Arctic Ocean and its bays are located next to Canada.
You need to add x1 and x2 then divide by two, then add y1 and y2
Glaciers cover nearly 10% of Earth's land surface.
