01 What is achieved by gradually blending one colour into another?
Answer and explanation
Correct answer: D. Gradual colour transition
Explanation: The governing technique is blending or gradation. By changing the proportion of the two colours gradually and softening the boundary, the artist creates a smooth visual transition rather than a sudden division. Thus option D is correct. A hard edge is the opposite effect, and the remaining choices describe neither the purpose nor the result of controlled blending.