Answer:
b. value
Explanation:
Value is an essential component of art that alludes to the gradual change of lightness or darkness of a color. It is made when when a light source sparkles upon an object creating highlights, form shadows and cast shadows.
"We gain strength, and courage, and confidence by each experience in which we really stop to look fear in the face...we must do that which we think we cannot." - Eleanor Roosevelt
The materials that were used to construct the pyramid by I.M. Pei was steel and glass. I'm sorry if it wasnt much help but that's all I could find on it.