If flat planes like a cube are drawn on a sphere, what visual effect will occur?

Correct answer: The roundness may break and the form may look hard

A sphere is defined by a continuously curved surface, so its planes turn gradually and its value transitions usually change smoothly. A cube, by contrast, has distinct flat planes separated by clearer edges and directional changes. If cube-like flat planes are placed across a sphere, the viewer may read abrupt breaks instead of continuous curvature. The sphere can then appear faceted, angular, or harder than it should. Option C is correct because it describes the loss of visual roundness. A is the opposite effect, B is incorrect because the treatment conflicts with spherical structure, and D is false because shading remains important for showing volume and light.