Which method is useful for creating bright areas in watercolour clouds?

Correct answer: Lift wet colour with a clean damp brush or paper

The governing concept is preserving or recovering the white of the paper to represent light. In a cloud wash, gently lifting damp pigment with a clean, slightly damp brush or tissue exposes a lighter area, creating a soft highlight and natural variation. Therefore, option A is correct. Covering the cloud with black destroys the light effect, cutting the paper is not a painting process, and oil is incompatible with normal watercolour technique. Lifting should be gentle to avoid roughening the paper.