This is my reasoning. I hope this can helpful to all.
1. Which of the following can be logically inferred from the passage?
A) Early turnpike and canal systems were not largely regulated by the U.S. government
-> Correct.
Last sentence of 2nd paragraph :
that the highways which came later were the first form of business to have their operations regulated
in large degree by the government
We can infer that before the highways, there was no regulation about turnpike and canal system
B) Current automakers directly employ more workers than did the railroad industry
-> Not mentioned. We cannot assume about this. There is no information about this.
C) The Pullman Car Company had more assets than the Westinghouse Brake Company
-> Not mentioned. We cannot assume about this. There is no information about this.
D) Railroads dramatically increased the land values in Atlanta
-> I confused between A and D, but I do not select D
There is a possibility that a spot in wilderness is more valuable, for example,
if there is huge gold mine, it can be more values than a thriving metropolis.
We can find correct information about A, but hard to find correct information about D.
E) Highways are more regulated today than railroads.
-> Not mentioned. We cannot assume about this. There is no information about this.
2. It can be inferred from the passage that the railroad system:
A. Had a greater influence on American markets than the American highway system
-> Not mentioned. We cannot assume about this. There is no information about this.
B. Required more capital than any other business before
-> Not mentioned. We cannot assume about this. There is no information about this.
C. Increased all land values across the U.S.
-> Not mentioned. We cannot assume about this. There is no information about this.
D. Involved strong competition among the companies that formed it
-> Correct.
4th line of second paragraph :
Railroads,too,because of the stress of competition, both in construction and operation
E. Created more employment than any industry before.
-> Not mentioned. We cannot assume about this. There is no information about this.
3. During the post-Civil War, pre-World War I period, if the railroad business was declining it could be expected that:
A. Investment banking would decline
B. Land values would decline
C. Production at the Pullman Company would decline
D. U.S. savings would decline
E. Car production would increase
C is correct.
We have to see the word position about 'the post-Civil War, pre-World War 1'
3rd paragraph has that contents about this
'In addition they(Railroads) were responsible,indirectly, ~ for example,
as the Pullman Palace Car Company,in the Westinghouse Air Brake Company.'
From this sentence, we can infer that without Railroads, Pullman Palace Company's
car manufacturing would decline.