What problem can wrong use of line density and line spacing create in shading?

Tone may become inconsistent and form may look flat

The governing concept is that hatching and cross-hatching use line density, spacing, direction, and layering to control value. Closely packed or layered lines generally produce a darker area, while wider spacing leaves a lighter area. If spacing changes accidentally, tones may become patchy, inconsistent, or unrelated to the light source. Incorrect direction can also ignore the surface and make a rounded object appear flat. Option A is correct because poor control can weaken both tonal consistency and the illusion of form. Option B is the opposite of the likely result, and three-dimensionality is never guaranteed. Option C incorrectly suggests that shadows correct themselves. Option D is false because line is a basic shading tool. Careful spacing and gradual transitions are therefore essential.

This is a Class 9 Art Education question. Chapter: Elements of Art. Topic: Line.