If every surface in a drawing is shown as equally smooth, what weakness may appear?

Correct answer: Differences between materials will be less clear

Correct answer: D. Texture helps the viewer distinguish materials and surface qualities. Paper, wood, metal, cloth, and stone do not normally appear or feel identical; their grain, roughness, softness, shine, and pattern differ. If an artist renders every surface with the same smooth treatment, the drawing loses useful information about what each object is made of. Option D is correct because material differences become harder to recognize. Option A is wrong because colour harmony concerns how colours work together, and equal smoothness does not automatically destroy that relationship. Option B is wrong because linear perspective is a separate system for showing depth through lines and scale; it does not disappear simply because textures are similar. Option C is wrong because texture treatment alone does not necessarily alter the measured proportions of forms. A smooth appearance may be intentional, but if the goal is realistic material description, ignoring texture is a weakness. Memory cue: texture answers the question “What might this surface be made of?”