01 What harm may be caused by excessive use of an eraser?
Answer and explanation
Correct answer: D. The paper may become dirty or worn
Explanation: The governing concept is careful use of drawing tools and protection of the paper surface. Repeated rubbing can remove or roughen the paper fibres, leave dirty smudges, and make later pencil marks uneven or difficult to control. Consequently, the paper may become dirty or worn, so option D is correct. Erasing cannot add colour, melt a pencil, or increase the paper’s size; those choices are physically unrelated to the action.