If the cast shadows of all objects in a still life show different light directions, what is the conclusion?

The lighting consistency is incorrect

In an ordinary still-life setup, the objects are understood to be illuminated by one main arrangement of light unless the artist intentionally presents several sources. Consequently, the cast shadows should normally relate to a common direction: a shadow extending rightward suggests light arriving from the left, and a shadow extending leftward suggests the opposite. If neighboring objects show incompatible shadow directions without an artistic reason, the scene loses physical unity. Option A is correct because the lighting logic is inconsistent. This does not automatically mean the entire composition is poor; B is too broad. C is the opposite of the likely effect, and D ignores an important cue for form, contact, and space.

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