Which two Great Lakes are primarily located within Canadian borders compared to American borders?

The correct answer focuses on the Great Lakes that are predominantly situated within Canada. Lake Ontario and Lake Huron are the two Great Lakes primarily located within Canadian borders.

Lake Ontario is unique in that it serves as the boundary between the United States and Canada, but the northern shore of the lake lies entirely within Canada. Lake Huron, on the other hand, has a much larger portion of its area situated in Canada, with only a small fraction belonging to the United States.

In contrast, other options mentioned do not fit the criteria of being primarily within Canadian borders. For instance, Lake Michigan is entirely within the United States and does not share its borders with Canada, making it irrelevant to this question. Lakes Superior and Erie also have significant portions in the U.S. and are not primarily Canadian. Therefore, the focus on Lake Ontario and Lake Huron aligns with the question regarding their geographic positioning.