问逻辑。。谢谢大家

zscsl

In the past, most children who went sledding in the winter snow in Verland used wooden sleds with runners and steering bars.  Ten years ago, smooth plastic sleds became popular; they go faster than wooden sleds but are harder to steer and slow.  The concern that plastic sleds are more dangerous is clearly borne out by the fact that the number of children injured while sledding was much higher last winter than it was ten years ago.

Which of the following, if true in Verland, most seriously undermines the force of the evidence cited?



A.    A few children still use traditional wooden sleds.

B.    Very few children wear any kind of protective gear, such as helmets, while sledding.

C.    lastic sleds can be used in a much wider variety of snow conditions than wooden sleds can.

D.    Most sledding injuries occur when a sled collides with a tree, a rock, or, another sled.

E.     Because the traditional wooden sled can carry more than one rider, an accident involving a wooden sled can result in several children being injured.

girlwithwings

B ？

TinyBar

C选项。孩子受伤的数量增加是因为塑料雪橇更广泛的使用，而非其比木质雪橇更危险。

prayer

答案同楼上。他因削弱。

they go faster than wooden sleds but are harder to steer and slow. 这是文中的原因。

c选项是另外一个原因