What characteristic of the dry brush technique makes it suitable for certain subjects?

The dry brush technique is known for its ability to create a textured appearance by applying a small amount of dry paint to a surface with a relatively dry brush. This method allows for a rough and uneven texture, which is particularly effective in capturing the essence of subjects like rocks, grasses, and other natural elements where a rugged appearance is desirable. This roughness can mimic the irregular surfaces of these subjects, enhancing the sense of realism and depth in the artwork.

In contrast, the other characteristics do not align with the primary strengths of the dry brush technique. A smooth and blended texture is more characteristic of techniques where a wet medium, such as traditional painting, is used to merge colors seamlessly. While fine details can sometimes be rendered with dry brush, the technique's true hallmark is not its precision but rather the texture it imparts. Finally, the requirement for water-based paints is not exclusive to dry brush and does not define the technique's suitability for representing particular subjects.