What is the condition of the brush in a wet-brush technique?

Correct answer: The brush is moist with paint or water

The governing concept is the relationship between brush moisture and paint flow. In a wet-brush technique, the bristles contain water, diluted colour, or both, so the paint moves smoothly across the surface and can blend with nearby colour. Hence option A is correct. Burning the brush, removing its bristles, or filling it with dust would destroy or contaminate the tool and has no role in this technique.