p.18 "it can be inferred fromt he passage that the author's explanatin in line 50-54 would be most weakened if which one of the following were true?"
I could tell that this answer would need to point out something along the lines of
a) the audience of that time applauding after each section, or
b) musicians not forced into extra brilliance int he finale in order to generate applause....
both (C) and (D) talk about that.
Why is (D) more correct than (C)? Because (D) says that they STILL applaud after each section, though routinely, but they witheld their most enthusiastic appluase until the final movement, but still they would applaud ENTHUSIASTICALLY... so it is still a different situation than contemporary times, thus not weaking his explanation.
Thanks again.