I would say it is C, if not possibly B.
Yes, it is easier to concentrate, you learn better, you don't have to worry about social problems.
She borrows the necklace from her friend then loses her necklace and spends years paying off a necklace that was not worth a lot
The main purpose of subheadings are: They stand out because of their size and attract attention. The scanner will stop to read them and continue scanning until the next subhead which they'll then read. Scanning from subhead to subhead, they serve to guide the reader down the page.
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Hope it helps...</h2>
D he has the power to read peoples mind