"<span>The library's holdings increased from 4 million books last year to 4.2 million this year" is what I believe the answer is, as this is the only one that doesn't directly affect the entire community.</span>
Recalcitrant means to have an uncooperative attitude toward authority of discipline so the most likely answer would be b. agreeable
A period! An appositive is a noun that comes after another noun to rename it or describe it. In the sentence, "the correct punctuation" is then redefined as "a period"