On which paper surface is graphite texture more clearly visible?

Correct answer: Grainy or rough paper

The governing concept is the interaction between graphite and paper grain. Rough or grainy paper has raised and recessed areas that receive graphite unevenly, making the broken texture and variation in value more visible. Thus option B is correct. Very smooth paper tends to produce an even, controlled mark, while plastic and metal are not the ordinary paper surfaces intended for this graphite-texture comparison.