Charcoal is primarily used for which type of art?

Charcoal is primarily used for drawing because of its rich, deep tonal properties and the ease with which it can be manipulated on paper. It allows artists to create a wide range of effects, from fine lines to bold, dramatic strokes, and can be smudged or blended to create shading or texture. The material's softness and versatility make it ideal for sketching as well as more finished artwork, allowing for expressive mark-making and quick studies.

While other mediums like watercolor painting, printmaking, and sculpting each have their unique characteristics and techniques, they do not utilize charcoal as their primary medium. Consequently, drawing stands out as the most suitable art form for which charcoal is specifically intended and most commonly used.