PT 2 S4 Q14

The mayor boasts that the average ambulance turnaround time, the time from ... ...

Which one of the following would strengthen the author's conclusion that it was the redefinition of "top priority" that produced the reduction in turnaround time?
(A) The number of heart attacks and strokes declined this year.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Practice Set: "Stronger" Questions, Set 2