Answer: D. It prevented railroads from charging farmers more than other customers.
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Explanation:
During the 1870s, there was a growing fear that railroad companies were becoming too powerful and monopolistic. At the time, the main way to transport goods was through railroad. Major highway systems weren't really that common or practically non-existent back then. So if you wanted to connect various cities together, then you would most likely do it through railroads.
The railroad companies usually charged a higher price for different groups of people, depending on the circumstances. This discrimination and higher prices led farmers to pressure congress into forming legislation that would ensure fair prices across the board.
