Answer:
doesn't
Explanation:
just need to get to 20 characters
The incorrect word is A) mustn´t
I hope this helped
The anser is up lifting i had the same question and answerd it correct
I think b sir :( im only in high school im sorry if its wrong
D. Teacher has underestimated the son.
The teacher has labeled the son as a "slow learner" and the father is arguing that that is not true.