How can depth be created by varying edge clarity in a painting?

Correct answer: By using clear edges nearby and softer edges in distant areas

A useful spatial principle is atmospheric or visual perspective: nearby forms usually retain clearer, sharper boundaries, while distant forms appear softer and less distinct. Applying this variation prevents every object from competing equally for attention and helps the viewer read depth. Thus option A is correct. Equal hard edges flatten the scene, erased edges remove structure, and black outlines alone do not establish distance.