A dark colour spreads too quickly while being blended over a light colour. What should be done?

Correct answer: Reduce the amount of dark colour and use light strokes

Controlled blending depends on gradually changing value rather than placing a large amount of dark pigment at once. Reduce the dark colour, remove excess paint if necessary, and use light strokes to build the darker value step by step; therefore option C is correct. Adding more dark colour worsens the spread, soaking the brush is ineffective, and removing the light base destroys the intended transition.