LSAT 144 – Section 3 – Question 24

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Question
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Type Tags Answer
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Curve Question
Difficulty
Psg/Game/S
Difficulty
Explanation
PT144 S3 Q24
+LR
+Exp
Inference +Inf
Conditional Reasoning +CondR
Causal Reasoning +CausR
Net Effect +NetEff
A
2%
153
B
2%
155
C
73%
164
D
20%
158
E
3%
159
145
154
162
+Harder 145.106 +SubsectionEasier

Many homeowners regularly add commercial fertilizers to their lawns and gardens to maintain a healthy balance of nutrients in soil. The widely available commercial fertilizers contain only macronutrients—namely, nitrogen, phosphorus, and potassium. To remain healthy in the long term, soil for lawns requires the presence of these macronutrients and also trace amounts of micronutrients such as zinc, iron, and copper, which are depleted when grass clippings are raked up rather than allowed to decay and return to the soil.

Summary
Many homeowners add commercial fertilizer to their lawns to keep them healthy.
Lawn soil needs macronutrients and micronutrients to remain healthy long-term.
Widely available commercial fertilizers only contain macronutrients.
Raking up grass clippings instead of letting them decay in the soil depletes soil’s micronutrients.

Very Strongly Supported Conclusions
If homeowners rake their grass clippings instead of letting them decay, then widely available commercial fertilizer alone is not enough for their soil to remain healthy long-term.
Homeowners who use widely available commercial fertilizer and also rake their grass clippings need to use another source of micronutrients in order for their soil to remain healthy long-term.

A
There is no single fertilizer that provides both the macronutrients and micronutrients necessary for maintaining soil’s long-term health.
Unsupported. “Widely available commercial fertilizers” do not provide both the macronutrients and micronutrients necessary for soil’s long-term health. But this doesn’t mean that no fertilizer provides all necessary nutrients.
B
The macronutrients nitrogen, phosphorus, and potassium are available to homeowners only in commercial fertilizers.
Unsupported. These macronutrients are available to homeowners in commercial fertilizers, but they might be available in other fertilizers or methods too.
C
Widely available commercial fertilizers are not alone sufficient to maintain a healthy balance of nutrients in soil for lawns where grass clippings are not allowed to decay and return to the soil.
Very strongly supported. Widely available commercial fertilizers only provide macronutrients, and soil needs both macro and micronutrients. Since raking grass clippings depletes micronutrients, commercial fertilizers alone are not enough to keep the soil healthy in these lawns.
D
For soil to remain healthy in the long term, it requires the regular addition of both commercial fertilizers and a source of micronutrients such as grass clippings that are allowed to decay and return to the soil.
Unsupported. Commercial fertilizers provide macronutrients and decaying grass clippings provide micronutrients. But these might not be the only sources of nutrients. There could be other methods, like using compost or manure, that also allow soil to remain healthy long-term.
E
Homeowners who rake up their grass clippings are unable to maintain the long-term health of the soil in their lawns and gardens.
Unsupported. Raking up grass clippings depletes soil’s micronutrients, but there might be other sources of micronutrients that homeowners can use to maintain the long-term health of their soil.

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