It's C, they are more suspicious now. Good luck =)
I think that the answer for "site" should be c. location.
Answer:
B.
Explanation:
A and C have awkward sentence structure because "when a car needs many serious repairs, it might be cheaper to buy a new car", it repeats the word car again making it redundant and in C, "When a car had needed many serious repairs, it might be cheaper to buy a new one", it has wrong use of past-tense.
“ teens need adequate sleep and REM sleep to rebuild long term memory for learning and , focus attention for driving and maintaining health and fighting obesity.”
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