Which is the most complete criterion for successful colour filling and blending in an advanced colour study?

Correct answer: Even filling, smooth transitions, controlled edges, suitable values, and colour harmony

A complete evaluation combines technique and visual organisation. Option A is correct because successful advanced work requires an even application, smooth but intentional transitions, controlled edges, appropriate light-dark values, and harmony among colours. Brightness alone cannot create quality; identical strokes may ignore form and texture; and thick outlines can flatten the image. The criterion must judge how all these features work together rather than rewarding one isolated effect.