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Railroads rely increasingly on automation. Since fewer railroad workers are needed, operating costs have been reduced. This means that we can expect the volume of freight shipped by rail to grow. The chief competitor of railway shipping is shipping by truck, and no reduction in operating costs is predicted for the trucking industry.

Which one of the following most accurately states the argument's overall conclusion?


The argument gives several pieces of support: railroads use more automation, need fewer workers, and have lower operating costs, while trucking is not expected to get the same cost reduction. From this, the author concludes that rail freight volume will grow. So the overall conclusion is the prediction about increased rail shipping.

(A) The volume of freight shipped by rail can be expected to increase.

This is correct. This is the main claim the other statements support.

(B) Increasing reliance on automation means that fewer railroad workers are needed.

This is a premise. It helps explain why railroad operating costs have gone down.

(C) No reduction in operating costs is predicted for the trucking industry.

This is a premise. It helps support the idea that rail may become more competitive than trucking.

(D) Operating costs for railroads have been reduced as a result of increased reliance on automation.

This is also a premise. It supports the prediction that rail freight volume will increase.

(E) The chief competitor of railway shipping is shipping by truck.

This is background information used to support the comparison between rail and truck shipping.

Answer: (A)
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