Bicycle safety expert: Bicycling on the left half of the road is much more likely to lead to collisions with automobiles than is bicycling on the right. After all, in three different studies of bicycle-automobile collisions, the bicyclist was riding on the left in 15, 17, and 25 percent of the cases, respectively.
Skeptic: But in places where a comparatively high percentage of bicyclists used to ride on the left, there was surprisingly little decrease in collisions between bicyclists and automobiles after bicycling on the left was made illegal.
Which one of the following statements about places that have outlawed bicycling on the left half of the road, if true, most helps to resolve the apparent discrepancy between the bicycle safety expert’s claim and the facts cited by the skeptic?(A) These places also have laws about other aspects of bicycling safety.
(B) These places provide bicycle-safety education programs for teenagers.
(C) Police officers in these places do not enforce regulations that apply to bicyclists.
(D) Large numbers of adults as well as children ride bicycles in these places.
(E) Collisions between bicyclists and automobiles constitute about one-quarter of the bicycle accidents in these places.