Defining charcoal
Step 1: Charcoal is a drawing medium made from burnt wood, typically willow or vine, used for sketching and shading due to its dark, powdery texture.
Evaluating options
Step 2: Analyze the options:
- (A) Graphite: Incorrect, as graphite is a different material used in pencils.
- (B) Red colour: Incorrect, as charcoal is not a color but a medium, typically black or gray.
- (C) Oil colour: Incorrect, as oil colour is a paint medium, not charcoal.
- (D) None of these: Correct, as charcoal is distinct from the listed options.
Thus, the correct answer is (D).