You definitely cannot use any piece of art A. that is public domain

B. with a copyright symbol

C. that is over 100 years old

D. without any indication of who made it

Dynamic symmetry should be the answer

He could go with d. temperatempera coloring is very precise and can easily be used if you have the skills necessary to paint hair. this was commonly seen in religious paintings made with tempera techniques. the first tree are not that much about fine details and photorealism and are more about vivid colors and expressiveness.