Why should brush strokes turn gradually rather than suddenly where fur direction changes?

Correct answer: It naturally shows body curvature and hair flow

The governing concept is form-following texture. Fur lies over a three-dimensional body, so its direction changes progressively as the underlying surface turns. Gradual changes in stroke direction make the hair appear to wrap naturally around that body structure and preserve believable flow. A sudden turn looks mechanical; it does not speed drying, make every hair identical, or stiffen the brush. Therefore, A is correct.