01 Which defect may result from overbrushing a wet poster-colour layer?
Answer and explanation
Correct answer: A. The surface may become uneven and streaky
Explanation: Overbrushing a wet layer repeatedly disturbs the pigment and may lift paint that has already been placed. The result is often an uneven, streaky, or patchy surface with visible brush marks, so option A is correct. Repeated brushing does not reliably increase gloss or opacity, and poster colour does not become waterproof immediately merely because it has been brushed more.