How does watercolour spread when applied to wet paper?

Correct answer: Soft and diffused

The governing concept is the wet-on-wet watercolour technique. Moisture already present in the paper allows the water-based pigment to flow outward from the brush mark, producing soft, blurred, and diffused edges. Thus, option A is correct. Paint does spread on wet paper; hard edges are more typical of wet-on-dry work, and watercolour does not settle like oil paint.