Quote:
It is commonly believed that the extensive use of high-tech agricultural machinery is essential for maintaining soil health on large farms. However, evidence suggests that simply adopting no-till farming, which minimizes the disturbance of soil, is sufficient. This conclusion is supported by studies indicating that farms using no-till practices consistently report better soil health.
Which of the following, if true, most seriously weakens the force of the evidence cited?
(A) Many agricultural scientists continue to recommend traditional plowing techniques alongside modern machinery to prevent soil compaction and maintain fertility.
(B) Farms that combine no-till practices with traditional tilling methods report the highest levels of soil fertility and overall health.
(C) Farms using no-till farming often require high-tech agricultural machinery to effectively manage crop residue, which is not removed by tilling.
(D) The studies assessing soil health on farms using no-till practices were funded by manufacturers promoting high-tech farming equipment, potentially biasing the results.
(E) The metrics used to assess soil health in the studies are typically those that favor soils which have been recently tilled and chemically treated.
Background: It’s commonly believed that the extensive use of high-tech agri machinery is essential for maintaining soil health on large farms.
Premise: However, studies indicate that farms using no-till practices, which minimize the disturbance of soil, consistently report better soil health.
Conclusion: Adopting no-till farming alone is sufficient to maintain good soil health in large farms.
We’re looking to weaken the argument.
A. This is irrelevant. It offers another perspective, but it doesn’t address any assumptions.
B. This is irrelevant, because the conclusion is about good soil health, not the best soil health. No-till farming could still be adequate to maintain good soil health.
C. This weakens the conclusion because if the no-till farms still have to use high-tech machinery, then adopting no-till farming alone would not be sufficient to maintain good solid health.
D. If anything, this strengthens the argument, because the bias it’s vulnerable to would be in favor of high-tech agri equipment, not no-till farming.
E. This has an unclear effect on the argument, but also leans towards strengthening, since the findings still suggested that no-till soil is healthier, despite the studies being designed to favor tilled and chemically treated soil.
Best answer is C.