GWD~~~~~

Crowding on Mooreville’s subway frequently leads to delays, because it is difficult for passengers to exit from the trains.  Subway ridership is projected to increase by 20 percent over the next 10 years.  The Metroville Transit Authority plans to increase the number of daily train trips by only 5 percent over the same period.  Officials predict that this increase is sufficient to ensure that the incidence of delays due to crowding does not increase.

Which of the following, if true, provides the strongest grounds for the officials’ prediction?

A.      By changing maintenance schedules, the Transit Authority can achieve the 5 percent increase in train trips without purchasing any new subway cars.

B.       The Transit Authority also plans a 5 percent increase in the number of bus trips on routes that connect to subways.

C.      For most commuters who use the subway system, there is no practical alternative public transportation available.

D.      Most of the projected increase in ridership is expected to occur in off-peak hours when trains are now sparsely used.

E.       The 5 percent increase in the number of train trips can be achieved without an equal increase in Transit Authority operational costs.

why d?~

本题结论是即使增加rideship也不会加重delay

要注意题目说过delay是因为it is difficult for passengers to exit from the trains

B选项完全对解决这个问题没有帮助

即使有了bus 由于rideship增加而造成的exit的问题加重从而delay 还是没有解决