Which term describes a map that covers a large area?

The correct term that describes a map covering a large area is "small scale." In cartography, the scale of a map refers to the ratio between the distance on the map and the corresponding distance on the ground. A small scale means that the map is representing a larger geographical area but with less detail. For example, a world map would be considered small scale because it encompasses vast distances and therefore must simplify the features displayed.

In contrast, a large scale map depicts a smaller area with a higher level of detail, making features easier to identify, but it cannot encompass as large an area as a small scale map. A medium scale falls between these two and is suitable for regional maps. The term "extensive scale" is not commonly recognized in the context of cartography, making "small scale" the definitive answer in this case.