B. There is something that they do not understand in that part.
Thwart: To oppose or prevent.
To thwart any outsiders from intruding, I built this wall made of broken bottles.
Buffy realized if the news of the scandal got out it would thwart her chances of becoming the president.
I’m almost certain those are all examples of the Middle Thirteen Colonies
Pretty sure it's the First and Third sentence.
The incorrect word is A) mustn´t
I hope this helped
