PT 24 S2 Q19

In Australia the population that is of driving age has grown larger over ... ...

Each of the statements below, if true, weakens the argument EXCEPT:
(A) Three years ago, a mandatory seat-belt law went into effect throughout Australia.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Practice Set: "Weaker" Questions, Set 3 - Difficult/Uncommon Mix (25Q)