01 What is the most appropriate use of line-weight variation in contour drawing?
Answer and explanation
Correct answer: D. Vary line thickness according to proximity, turning, and light
Explanation: The governing drawing concept is expressive line weight. A contour can become heavier where an edge is nearer, turns away from the light, or needs stronger spatial emphasis, and lighter where it recedes or catches light. This variation suggests depth and form, so option D is correct. Equal thickness can flatten the drawing, while whitening shadows or adding colour is unrelated to contour weight.