The answer is: the fact that the entire town has paid to see
the "show" again, but this time they're
bringing things to throw at the duke and the king
Explanation:
This is the excerpt from the Mark Twain's "The adventures of Huckleberry Finn". Reading this text, we see that Huck notices that people who came to see the show have already been there previous nights and also that they are hiding something under the coats or in the pockets. Huck realizes that whatever they're hiding is responsible for the unbearable, foul smells which he identifies as the rotten egs and cabbage. This shows the true intentions of people who paid to see the show once more.
I believe it is A due to "The lady made detailed plans, engaged the caterer and the orchestra well in advance" isn't exactly connect well and be hard to understand so you'd put a comma between "caterer, and".