The question is asking which of the following pieces of art would be
considered a form of social protest? But there are no choices provided.
Let's give some examples though: 1) something that is forbidden, for
example a depiction of democracy in a totalitarian state 2) portraying
poverty or misery and showing this to the advantaged elite - it would be
a way of "complaining" about the elite (for example paining a
sweatshop)
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.