01 Why is deciding the light source important in pencil drawing?
Answer and explanation
Correct answer: D. It helps place light and shadow correctly
Explanation: Light-and-shadow modelling requires one consistent direction of illumination. Once the light source is decided, the artist can place the highlight on the facing side, build mid-tones across the form, and put the cast or core shadow on the appropriate side. Therefore, option D is correct. The light source does not determine paper size, alter pencil length, or erase the outline.