Which verdi opera uses a play by victor hugo as its inspiration?

One of the researchers mentions that he is looking for "affiliation cues" in the video recordings of the experiment. how would you describe what these affiliation cues indicate?

Most of the written music that has been preserved from the middle ages is a. sacred. b. for flute and guitar. c. polyphonic. d. dance music.

What did michealangelo do when hired by the church to paint the sistine chapel ?