Which of the following is NOT a border of Canada?

Canada shares its borders with several geographical features and territories, and understanding these relationships is key to identifying what constitutes a border.

Greenland is not a direct neighbor of Canada, as it is separated by the Nares Strait, which is a body of water. The only land borders Canada shares are with the United States to its south and maritime borders with the Atlantic, Pacific, and Arctic Oceans. Furthermore, while Alaska (which is part of the United States) is adjacent to Canada, and both the Arctic Ocean and the Pacific Ocean border Canada, Greenland does not share a land or direct maritime boundary with Canada.

Recognizing Canada’s geographical relationships highlights that while Greenland is in proximity, it does not constitute a border of Canada in the context of land or direct oceanic adjacency.