The difficulty with the proposed high speed train line is that a used plane can be bought for one th...........

Logical Reasoning(Master ) Statement - Arguments

The difficulty with the proposed high-speed train line is that a used plane can be bought for one-third the price of the train line, and the plane, which is just as fast, can fly anywhere. The train would be a fixed linear system, and we live in a world that is spreading out in all directions and in which consumers choose the free-wheel systems (cars, buses, aircraft), which do not have fixed routes. Thus a sufficient market for the train will not exist.

Which of the following, if true, most severely weakens the argument presented above?

Cars, buses, and planes require the efforts of drivers and pilots to guide them, whereas the train will be guided mechanically.

Cars and buses are not nearly as fast as the high-speed train will be.

Planes are not a free-wheel system because they can fly only between airports, which are less convenient for consumers than the high-speed train’s stations would be.

The high-speed train line cannot use currently underutilized train stations in large cities.

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Master Statement - Arguments

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Explanation:

Answer & Explanation
Answer – 3)
Explanation :
1) The method of guidance is irrelevant to the argument about freewheel versus fixed linear systems 2) The passage compares the speed and system models of airplanes and high-speed trains. The argument does not incorporate buses and cars, which are included only to give examples of free-wheel system, and so this statement is irrelevant.
3) This statement properly identifies the weakness in the argument: Airplanes are not truly a free-wheel system because they are restricted to travelling between airports. Additionally airports tend to be less conveniently located than train terminals, which have further potential to weaken the argument in favour of airplanes.
4) The inability of high-speed trains to use some convenient train stations strengthens, rather than weakens, the argument in favour of airplanes.