Answer:
5: Pop Art
6: The use of only smooth shading through all of the art
Explanation:
They are the symbols in written or printed music that show the singer or
instrumental player when to sing or play very very soft, very soft, soft,
loud, very loud, very very loud, growing softer, or growing louder.
It is exactly the same in the case of the opera’s orchestra and its conductor with one solitary difference: you see this machinery and its director and can watch them in action. There is only one great theater in the world, the Festspielhaus in Bayreuth, where the orchestra and conductor are completely invisible to the audience, though this arrangement has been imitated by a few smaller houses, notably the Prinzregenten Theatre in Munich. Wagner was the first to realize this idea, but not the only one of his time to conceive it. Verdi, in his letters, earnestly recommended having an invisible orchestra...
Explanation:
B because if you understand the passage b is telling you how they are saving the environment
Gray because the neutral colours are black, white and gray.