What is the contribution of overlap to the illusion of movement with line?

Correct answer: It shows front-and-back relationships and the sequence of movement

Direct answer: C, it shows front-and-back relationships and the sequence of movement. Overlap occurs when one line, shape, or form partly covers another. The covered part is generally read as being behind, while the covering part is read as being in front. This creates spatial order and depth. When overlapping lines or forms are arranged in a repeated or progressive sequence, the eye can follow that sequence and imagine movement from one position to the next. A is wrong because overlap usually suggests depth and ordering rather than flatness. B is wrong because overlap can support direction when the repeated forms are arranged purposefully. D is wrong because overlap does not stop vision; it guides the eye through the composition. The exact effect depends on the arrangement, so overlap alone is not a guarantee of movement, but it is a useful device. Memory cue: overlap answers “what is in front?” and can also help show “what comes next?”