Question

Which technique involves painting on a freshly plastered wall and was popular during the greek, roman, and renaissance periods

Answer 1

This technique is called fresco

Answer 2

fresco was the technique that involves painting on a freshly plastered wall that was a painting that was done rapidly in water color on a wet wall/ceiling. they do this so the colors penetrate the plaster as it dries and fixes.

i hope this helps you out! correct me if i'm wrong. :^)