The law does not mandate the wearing of protective gear while riding a bicycle, skateboard or any other unmotorized vehicle. Last year, however, thousands of injuries could have been prevented by the wearing of even just a helmet. Therefore, anyone using an unmotorized vehicle should wear a helmet.
Which of the following, if true, casts the most doubt on the argument's conclusion?
Incorrect.
[[snippet]]This answer choice supports the author's conclusion by showing how serious the injuries caused were and, therefore, implying that they must be ceased by the wearing of helmets. Focus on the conclusion and remember that you are looking for a statement that will weaken it.
Incorrect.
[[snippet]]This answer choice neither strengthens nor weakens the argument's conclusion. The fact that some people choose to wear protective gear does not weaken the conclusion that everyone should.
Incorrect.
[[snippet]]This answer choice neither strengthens nor weakens the argument's conclusion. Since the conclusion has nothing to do with the protective gear market, a statement about it cannot help us with our task: weakening the conclusion.
Incorrect.
[[snippet]]This answer choice supports the author's conclusion by giving us another reason why helmets should be worn: they're now lighter and more comfortable than ever. Focus on the conclusion and remember that you are looking for a statement that will weaken it.
Good!
[[snippet]]This answer choice attacks the argument's assumption by showing a negative aspect of wearing a helmet. If a person wearing a helmet can't see very well, he or she may are more prone to accidents.