Answer:
the piece is subject or matter
Explanation because the artist had a lot of thinking to do with this one
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!:)
C) The composer may wish to use certain instruments to support other instruments; as the bass and harmony support the melody.
The answer to your question is:
Edgar Degas!
Hope this helps!