A. Quotation marks
It’s quoting a passage or work
"living in exile"
This is referred to as living in exile, because the 24th row is the "x-aisle", which is a play on the word "exile" because that's what it sounds like out loud. Typically, this is used as a joke or a pun in algebra or another math class.
B
Not A or C because they I traduces new information to the paragraph, and this cannot be conclusions. Not D because it is off topic