LSAT 118 – Section 4 – Question 07

LSAT 118 - Section 4 - Question 07

December 2004

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT118 S4 Q07
+LR
Strengthen +Streng
Causal Reasoning +CausR
A
1%
160
B
0%
148
C
98%
165
D
1%
157
E
0%
155
120
126
136
 +Easiest 147.106 +SubsectionMedium

A typical gasoline-powered lawn mower emits about as much air-polluting material per hour of use as does an automobile. Collectively, such mowers contribute significantly to summer air pollution. Since electric mowers emit no air pollutants, people can help reduce air pollution by choosing electric mowers over gasoline ones whenever feasible.

Summarize Argument
The author concludes that people can help reduce air pollution by switching from gas mowers to electric mowers. This is because gas mowers produce lots of air pollutants, while electric mowers produce none.

Notable Assumptions
The author assumes that air pollutants should be measured on the output side of an individual lawn mower. This means the author either doesn’t think pollutants on the input side (i.e. electricity generated at air-polluting power plants) should be factored in, or that such pollutants are negligible compared to the pollutants individual lawnmowers produce.

A
Lawns help to clean the air, replacing pollutants with oxygen.
The author doesn’t talk about the mere fact of having a lawn. We’re interested in how different mowers contribute to air pollution.
B
Electric lawn mowers are more expensive to purchase and maintain than are gasoline mowers.
We don’t care about expense. We care about which helps reduce air pollution.
C
Producing the power to run an electric mower for an hour causes less air pollution than does running an automobile for an hour.
Even accounting for the energy spent producing electricity, electric mowers still produce less air pollution than gas mowers.
D
Most manufacturers of gasoline lawn mowers are trying to redesign their mowers to reduce the emission of air pollutants.
We don’t care what they’re trying to do. As it is, gas mowers produce a ton of air pollutants.
E
Lawn mowers are used for fewer hours per year than are automobiles.
We’re comparing between mowers. We don’t really care about the differences between mowers and cars.

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LSAT PrepTest 118 Explanations

Section 1 - Logical Reasoning

Section 2 - Reading Comprehension

Section 3 - Logical Reasoning

Section 4 - Logical Reasoning

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