The cause of the dark colors on the Sistine Chapel ceiling was largely a result of _______

Question

a. a fire in the early twentieth century that caused minimal damage to the chapel
b. the mixing of dark colors by Michelangelo himself
c. animal glues used as varnishes by past restorers
d. paint used by critics who thought the colors Michelangelo used were too bright
e. none of the above

Answer 1

c. animal glues used as varnishes by past restorers