The correct answer is b.false
Twain likely made Henry Adams an American in England to show how far removed he was from what was viewed as proper English society. As an American he would be considered a backwards outsider that could not possibly fit in. That all changes when he receives the bank-note and then can afford to buy his way into the English society.
C.
"Does not correct" means basically, not change.
The sentence needs to make sense, too.
The only sentence that doesn't correct it is:
My favorite snack is fruit salad, which is delicious with whipped cream.
