It shifted like, most people who liked art and actually cared about it would go to art shows and spend tons of money on art. So, basically if you liked art you were in a small group of people in this time period. There were only so many people who actually liked art.
Answer:
it is a quote by Gertrude Stein.....
It's C because the subject is " the new coaches " and the predicate is the rest.
I think the correct answer is D.