Which painting medium is a painting on wet plaster integrated into a wall?

Which painting medium is a painting on wet plaster integrated into a wall?

• A. Fresco
• B. Gesso
• C. Impasto
• D. Acrylic

Answer: (A)

Fresco is the technique where pigment is applied to plaster while it is still wet, so the plaster itself becomes the painting surface and is integrated into the wall as it dries. In buon fresco, artists lay down fresh lime plaster (intonaco) on a wall and apply pigments mixed with water before the plaster sets; the chemical bond between the lime and the pigments locks the color into the wall, creating a durable, seamless mural. Gesso is a dry ground used to prime surfaces like panels or walls, so the paint sits on a prepared surface rather than becoming part of the wall. Impasto describes thickly applied, textured paint on a surface, not a method tied to plaster integration. Acrylic is a modern paint that dries as a surface film and isn’t fused with wet plaster.

Fresco is the technique where pigment is applied to plaster while it is still wet, so the plaster itself becomes the painting surface and is integrated into the wall as it dries. In buon fresco, artists lay down fresh lime plaster (intonaco) on a wall and apply pigments mixed with water before the plaster sets; the chemical bond between the lime and the pigments locks the color into the wall, creating a durable, seamless mural.

Gesso is a dry ground used to prime surfaces like panels or walls, so the paint sits on a prepared surface rather than becoming part of the wall. Impasto describes thickly applied, textured paint on a surface, not a method tied to plaster integration. Acrylic is a modern paint that dries as a surface film and isn’t fused with wet plaster.