Which spatial relationship becomes unclear if a round fruit placed on a book is drawn without a contact shadow?

Correct answer: The fruit resting on the book surface

The governing concept is contact shadow, which anchors an object to the surface beneath it. A small dark area at the fruit’s base shows where the fruit meets the book and helps establish weight, contact, and distance from the supporting plane. Without it, the fruit may appear to float. Option C is correct; local colour, book thickness, and background value are not the primary spatial relationship being lost.