[求助]OG11-114

Whitney

Answer D weakens the conclusion in some way (it increased the uncertainty, but it does not totally denied the conclusion).
You have to look at the D carefully.
(D) When tolls were last
increased on the two bridges in question, almost 20 percent of the
regular commuter traffic switched to a slightly longer alternative
route that has since been improved.

It said that ~20 percent of vehicles switched to another route last time when there was an increase of tolls.  So it may not know what exactly percentage of traffic will use alternative route if the tolls inrease.  However, if this time the tolls increase a lot, then, much more vehicles will go through the alternative.

m8888302

查了字典还是不清楚tokens 到底是个啥东西，C到底想说什么啊？