Watercolor differs in its typical binder and brush behavior by?

• A. It uses gum arabic binder and brushes are generally hard.
• B. It uses oil binder and dries slowly.
• C. It uses gum arabic binder and brushes are generally soft.
• D. It uses acrylic binder and dries instantly.

Answer: (C)

Watercolor relies on a water-soluble binder, typically gum arabic, which keeps pigment particles suspended and allows the paint to stay transparent and rewettable. This binding system lets you build soft, layered washes and lift color if needed, giving that luminous, glassy look watercolor is known for. The brushes used are generally soft, so they can hold water and pigment and spread color with gradual, flexible edges rather than harsh, stiff strokes. The combination of a water-soluble binder and soft brushes is what enables watercolor to flow, blend, and value-range like a translucent wash. In contrast, oil uses an oil-based binder that dries slowly to form a film, and acrylic uses a fast-drying binder, also forming a film—neither of which matches watercolor’s typical behavior. Hard brushes would create more abrupt lines, not the soft, flowing edges characteristic of watercolor.