What will make the difference between wood and metal surfaces clear?

Correct answer: Grain in wood and shiny highlight in metal

Correct answer: A. Materials are recognised in visual art through characteristic surface clues, including texture, marks, value changes, and highlights. Wood can be suggested by grain lines that follow the direction of the material. Metal can be suggested by smoother surfaces and a sharper, brighter highlight or reflected light. These features do not mean every piece of wood or metal looks exactly the same, but they provide useful visual information about the material. B is weak because giving both materials the same flat colour removes important surface differences. C is incorrect because removing all detail gives the viewer less evidence for identifying the materials. D is insufficient because a written label names an object but does not visually show its surface quality. Therefore A is the only option that uses appropriate visual evidence. Memory cue: wood is often read through grain; metal is often read through controlled shine and highlight. Texture and value work together to communicate material identity.