This should be a writer's opinion
That is because it might differ based on who was talking. Some might disagree that it has become run-down, or some might say that it has become such way before "just recently".
A, because the meaning of a sentence can be made clear without the interjection ^-^
Hope I'm not too late! Good luck!
The correct answer would be A.Plot
It conveys the subject of the paragraph.
That way, the subject can be further elaborated and backed up with supporting statements/evidence in the following sentences of the paragraph :)
