There were many features that enveloped baroque music. These include long flowing melodic lines and phrases, ornamentation: such as trills, drastic dynamic contrast, and the use of the harpsichord.
Hope this was helpful :)
(P.s. I’m a music major)
maybe b. ABAB idk for sure though
it is D. all of the above. if you listen to the song it is verry loud after a few second, the song is about 40 mins or so, if you look at the sheet music it is very complex.