There's no options listed but I believe the answer you're looking for is
<span>"Orchestration."</span>
Answer: b. harmony
Explanation:
Harmony in various genres is usually considered paramount due to its use to create tension and and resolution in the music piece.
Harmony in music has evolved across different eras from the Renaissance to the Baroque to the Classical to the Romantic era. In Impressionism, harmony ensures that chords are able to coexist and this gives the feeling of finality to a piece.
A propaganda painting is a painting with information, especially of a biased or misleading nature, used to promote or publicize a particular political cause or point of view. So if I had to take a guess I'd say B.
