Answer :
The materials he used to paint with is fading away and soon it will be completely gone if it is not repainted on a daily basis.
a. He used a very thin layer of dry plaster to create a version of a fresco that shortly began to peel away from the wall.
b. He used a painting technique called sfumato, which proved to be ineffective in that time.
c. He uses traditional light and abandons any previous methods used to depict religious scenes.
d. none of the above.
Answer: He used a very thin layer of dry plaster to create a version of a fresco that shortly began to peel away from the wall.