What problem can occur if the darkest tone is placed without thought in form drawing?

Light direction and volume may look confusing

The governing concept is consistent value structure: every dark tone should support the chosen light source and the turning of the form. If the darkest mark is placed randomly, the viewer may read the wrong area as the deepest shadow or as a separate plane. This can make the light direction unclear, flatten the object, or distort its apparent volume. Option B is correct because careless placement disrupts both light logic and three-dimensional reading. Option A is unrelated to visual structure. Options C and D make the opposite claim; adding a very dark tone does not automatically create realism or correct form. The artist should compare all values, reserve the deepest dark for a justified location, and keep transitions consistent with the form.

This is a Class 9 Art Education question. Chapter: Elements of Art. Topic: Form.