PT 60 S3 Q1

A research study revealed that, in most cases, onceexisting highways near ... ...

Which one of the following, if true, most helps to explain the discrepancy between the intended results of the highway improvements and the results revealed in the study?
(A) Widened and extended roads tend to attract many more motorists than used them before their improvement.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Complete Section: LR-B, June '10 LSAT (PT 60 Sec. 3)