When a mapmarker makes a flat map of a sphere he or she must make a?

When a mapmaker creates a flat map of a sphere, they must make a projection. This involves transforming the three-dimensional surface of the sphere onto a two-dimensional plane, which can lead to distortions in area, shape, distance, or direction. Different projection methods, such as Mercator or Robinson, prioritize different aspects of accuracy depending on the map's intended use. The choice of projection is crucial for effectively conveying the geographic information.