medium · LSAT Logical Reasoning
If a region's forests are cleared, its topsoil erodes. If a region's topsoil erodes, its crop yields decline. So if a region's forests are cleared, its crop yields decline.
The pattern of reasoning above is most closely paralleled by which one of the following?
- If a firm automates, labor costs fall; whenever labor costs fall, profit margins widen; therefore automation widens profit margins.
- If demand rises, prices increase. If supply expands, prices increase. So if demand rises, supply expands.
- In the event that the treaty is ratified, tariffs drop. If tariffs drop, exports rise. So if exports rise, the treaty was ratified.
- If the treaty is ratified, tariffs fall; if tariffs fall, exports rise. The treaty is not ratified, so exports will not rise.
- If a student practices daily, her fluency improves. This student practices daily. So her fluency improves.
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