Which combination is suitable for showing a metal object in line drawing?

Clean edge lines, strong contrast, and highlights

The governing concept is the visual description of material through line, contrast, and selective light. Metal usually has firm boundaries and reflective surfaces, so clean edge lines help describe its hard construction. Strong contrasts between dark and light areas suggest reflection, while reserved highlights indicate a polished spot where light strikes the surface. Thus option A is the most suitable combination. Option B makes every area vague and soft, which weakens the impression of a hard reflective material. Option C removes variation and therefore cannot show changing reflections effectively. Option D would destroy useful negative space and make the drawing crowded. The artist should not outline or shade everything identically; controlled variation makes the metal quality believable.

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