Take a look at this question

Wusong1

On a certain day, nine scheduled flights on Swift Airlines were canceled. Ordinarily, a cancellation is due to mechanical problems with the airplane scheduled for certain flight. However, since it is unlikely that Swift would have mechanical problems with more than one or two airplanes on a single day, some of the nine cancellations were probably due to something else.

The argument depends on which one of the following assumptions?

A. More than one or two airplanes were scheduled for the nine canceled flights.

B. Swift Airlines has fewer mechanical problems than do other airlines of the same size.

C. Each of the canceled flights would have been longer than the average flight on Swift Airlines.

D. Swift Airlines had never before canceled more than one or two schdeuled flights on a single day.

E. All of the airplanes scheduled for the canceled flights are based at the same airport.

robertchu

A.
This question was discussed earlier somewhere in this board.

lip00ff2002

create a relationship between nine flights cancelled and more than one or two airplanes

Wusong1

Oh, I see. Thanks!