Cross-brushing is making the colour excessively muddy. Which remedy is most effective?

Correct answer: Let the first-direction strokes settle slightly and apply limited strokes in the second direction

Cross-brushing can add texture or even coverage, but repeated wet strokes disturb the paint film and mix pigments excessively. The governing control is timing and the number of passes. Option B is correct: allow the first direction to settle slightly, then use only a few controlled strokes in the second direction. More wet brushing, extra contrasting colours, or heavier pressure would increase pigment mixing and make the muddy result worse.