Why does the illusion of distance weaken if near and far objects have the same amount and clarity of texture detail?

Correct answer: Texture details on distant objects generally appear less distinct

The correct answer is A. Texture is one cue for judging depth: nearby surfaces usually show clearer, more distinguishable detail, while distant details tend to appear finer and less distinct. If near and far objects have the same amount and clarity of texture, this cue no longer helps the viewer distinguish their distances, so the sense of depth can weaken. Texture is one cue among several, not the only one.