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27 May 2026, 08:57
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
80% (01:49) correct
20%
(01:45)
wrong
based on 30
sessions
History
Date
Time
Result
Not Attempted Yet
Agriculture researcher: Because of its slow decomposition, paper is ineffective as a mulch to guard against soil erosion. However, a mixture of paper and manure, which decomposes faster than paper alone, is very effective. When spread over test plots, the mixture significantly decreased the amount of soil erosion. Since paper costs roughly the same as manure, farmers would be better off using this mixture than paper or manure alone.
The agriculture researcher's argument is flawed because it provides no evidence that
(A) paper by itself does not contribute to soil erosion
(B) mulch containing paper and manure works better than mulch containing only paper
(C) mulch containing paper and manure works better than mulch containing only manure
(D) mulch containing paper and manure works better than methods of preventing soil erosion that do not involve mulch
(E) mulch of pure manure provides nutrients to the soil that paper mulch does not
The agriculture researcher's argument is flawed because it provides no evidence that
(A) paper by itself does not contribute to soil erosion
(B) mulch containing paper and manure works better than mulch containing only paper
(C) mulch containing paper and manure works better than mulch containing only manure
(D) mulch containing paper and manure works better than methods of preventing soil erosion that do not involve mulch
(E) mulch of pure manure provides nutrients to the soil that paper mulch does not
27 May 2026, 18:00
Kudos
Bookmarks
Agriculture researcher: Because of its slow decomposition, paper is ineffective as a mulch to guard against soil erosion. However, a mixture of paper and manure, which decomposes faster than paper alone, is very effective. When spread over test plots, the mixture significantly decreased the amount of soil erosion. Since paper costs roughly the same as manure, farmers would be better off using this mixture than paper or manure alone.
The agriculture researcher's argument is flawed because it provides no evidence that
The researcher concludes that farmers would be better off using the paper and manure mixture than using either paper alone or manure alone. The evidence compares the mixture with paper alone, but it does not compare the mixture with manure alone. That is the missing comparison.
(A) paper by itself does not contribute to soil erosion
Wrong. The argument says paper is ineffective against erosion, but it does not need to show that paper actively contributes to erosion.
(B) mulch containing paper and manure works better than mulch containing only paper
Wrong. The argument does provide evidence for this. Paper alone is ineffective, while the mixture significantly reduced erosion.
(C) mulch containing paper and manure works better than mulch containing only manure
Correct. The conclusion says farmers would be better off using the mixture than manure alone, but the evidence never shows that the mixture is better than manure alone. Maybe manure alone works just as well or better.
(D) mulch containing paper and manure works better than methods of preventing soil erosion that do not involve mulch
Wrong. The argument compares the mixture only with paper alone and manure alone, not with every other erosion-prevention method.
(E) mulch of pure manure provides nutrients to the soil that paper mulch does not
Wrong. This may be true, but the argument is about preventing soil erosion, not soil nutrients.
Answer: (C)
The agriculture researcher's argument is flawed because it provides no evidence that
The researcher concludes that farmers would be better off using the paper and manure mixture than using either paper alone or manure alone. The evidence compares the mixture with paper alone, but it does not compare the mixture with manure alone. That is the missing comparison.
(A) paper by itself does not contribute to soil erosion
Wrong. The argument says paper is ineffective against erosion, but it does not need to show that paper actively contributes to erosion.
(B) mulch containing paper and manure works better than mulch containing only paper
Wrong. The argument does provide evidence for this. Paper alone is ineffective, while the mixture significantly reduced erosion.
(C) mulch containing paper and manure works better than mulch containing only manure
Correct. The conclusion says farmers would be better off using the mixture than manure alone, but the evidence never shows that the mixture is better than manure alone. Maybe manure alone works just as well or better.
(D) mulch containing paper and manure works better than methods of preventing soil erosion that do not involve mulch
Wrong. The argument compares the mixture only with paper alone and manure alone, not with every other erosion-prevention method.
(E) mulch of pure manure provides nutrients to the soil that paper mulch does not
Wrong. This may be true, but the argument is about preventing soil erosion, not soil nutrients.
Answer: (C)
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