The correct answer is D. Quebec and Ontario border nearly half of the United States.
Step-by-step explanation
The image shows a map of northern North America where the provinces of Canada and part of the United States are seen, this map also shows the imaginary dividing lines of meridians and parallels. Provinces are distinguished by some pattern of lines or points, or by light and dark gray colors. In the case of Ontario and Quebec, they are located in the southeastern part of Canada and mark the borderline between the United States and Canada. According to the map, it can be stated that the province that covers Quebec and Ontario is the equivalent of about half of the borderline between both countries, so the correct answer is D. Quebec and Ontario border nearly half of the United States.