The thing that happen between chapter 21 and chapter 22 is the tone permanently changes to a more cynical attitude and this is the significant structural shift. The answer to this question is which asking about what happen between chapters 21 and 22 is that the tone permanently changes to a more cynical attitude.
5) to provide a hint to the audience about what will happen later in the play
B. Destroy bad stereotypes
Just did this on apex
1.4.4.5.7.8.8.8,,6,3,,,1,2,3,3,5,67,8,
Answer: B
Explanation: I got everything right on the test.