Aloha!
Impressionism is characterized as small strokes, that are still visible to the eye.
If you haven't seen Impressionism, one of it's best work is by Vincent Van Gogh such as "The Starry Night."
Adios!:)
The correct answer is C. proportions.
The word proportion refers to the size, and how different parts of a particular object work together to make that object look the way it looks. Depending on the proportions of that object, a viewer may or may not like it, based on their personal affinities.