Umm, I'm kind of confused about the question, but I would assume that if, for example, I was taking an exam an pre-read the questions before answering, that I would be more prepared to answer, and therefore have a slightly better chance of getting the answer right...? I'm not really sure.
C-capitalization
U-usage
S-spelling-
P-punctuation
CUSP
I think the question is asking which sentences include misspelled words.
It's sentences 2 and 4 and the misspelled words are:
"success" and "environment" in sentence 2: they are misspelled in the original text.
"cold-weather gear" and "chose" in question 4
Additionally "anxious" is misspelled in question 3.