Answer:
D. Distortion.
Explanation:
In Geography, topography can be defined as the shape and structure of the Earth surface. Thus, a flat map is used to graphically describe this features.
Generally, elevations are represented on maps by lines of contour, which typically connect points having the same elevation. Also, elevations are shown on a physical map by using bands of color to connect points. In Geography, elevations are represented or measured in feets or meters.
Contours can be defined imaginary lines used for connecting locations that are having similar elevations on the Earth's surface. These contour lines are typically used for modeling the three-dimensional shape of the Earth surface in a map.
Hence, the changes in shape, size, and position of features that occur when representing the Earth on a flat map take place because of distortion.