Brush strokes in different directions are visible across a large poster colour area. What is the correct correction principle?

Correct answer: Apply a thin, controlled final coat in one direction

Uniform flat colour depends on consistent stroke direction, paint thickness, and timing. After the existing layer dries, a thin final coat applied in one direction can visually unify the surface and reduce distracting streaks. Thus option A is correct. Adding strokes in every direction increases irregular reflections, while scraping or soaking can damage the paper and the painted layer.