Need with this question answer fast!

What is a fiber? a. a geometric pattern that repeats the same pattern at different scales b. a small touch of color used to emphasize part of an artwork c. a precious metal, stone, or other material used to create jewelry d. a thin flexible material made from plant, animal, or human-made materials

Why were staff lines an important improvement to musical notation a. sl indicated rhythm b. sl indicated dynamics c. sl indicated pitch d. sl indicated meter

The "neo-impressionists." as they were called at the time, believed that is the proper subject for their painting