Asculpture looks different depending on the spectators’ position and the direction of their gaze—on what we call the viewpoint. how should we look at sculpture?

satin. 

"very shiny satin may look great in the fabric store or in the sewing room, but once onstage it can look fake and cheap as it reflects the light from the fixtures."

option c (nickel) is not found in earth's crust. the earth's crust basically contains eight (8) elements namely: oxygen, silicon, aluminum, iron, calcium, sodium, potassium and magnesium (listed in order of abundance).