In which condition does accidental line overlap weaken composition?

When it makes object boundary and structure unclear

The governing concept is clarity of line relationships in composition. An overlap is useful when it is planned and tells the viewer which contour belongs to which form. However, an accidental crossing can merge boundaries, hide structural information, or make two objects appear attached when they are not. This interrupts accurate form reading and weakens the organization of the picture. Therefore option A is correct. Option B describes purposeful depth, which normally strengthens composition. Option C describes clearer emphasis, another positive result. Option D describes a readable front-back relationship, also a valid use of overlap. The problem is not every intersection; it is an uncontrolled intersection that creates ambiguity and competes with the intended structure.

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