LSAT 143 – Section 4 – Question 17

LSAT 143 - Section 4 - Question 17

June 2015

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT143 S4 Q17
+LR
+Exp
Argument part +AP
Causal Reasoning +CausR
A
2%
156
B
7%
158
C
4%
159
D
86%
165
E
1%
154
128
140
153
 +Easier 146.108 +SubsectionMedium

Near many cities, contamination of lakes and rivers from pollutants in rainwater runoff exceeds that from industrial discharge. As the runoff washes over buildings and pavements, it picks up oil and other pollutants. Thus, water itself is among the biggest water polluters.

Summarize Argument
Water itself is one of the biggest water polluters. Why? Around many cities, pollution from runoff is greater than from industrial discharge. How? Water running over buildings and pavements picks up oil and other pollutants.

Identify Argument Part
This is evidence used to support that water is one of the biggest water polluters by showing water pollutes more than another big pollution source. It is also a sub-conclusion. The statement explaining how water picks up oil and contaminants supports it.

A
It is a conclusion for which the claim that water itself should be considered a polluter is offered as support.
The support relationship works the other way. The fact that water pollutes more than industrial discharge is evidence for why water is one of the biggest polluters.
B
It is cited as evidence that pollution from rainwater runoff is a more serious problem than pollution from industrial discharge.
The stimulus makes no claims about how serious the pollution is from any given source. It talks only about the amount of pollutants.
C
It is a generalization based on the observation that rainwater runoff picks up oil and other pollutants as it washes over buildings and pavements.
While that observation helps explain why water pollutes so much, the statement in question is not a generalization stemming from that observation. It is a comparative measurement against industrial pollution.
D
It is a premise offered in support of the conclusion that water itself is among the biggest water polluters.
This evidence, that water pollutes more than industrial discharge, helps make the case that water is one of the biggest water polluters.
E
It is stated to provide an example of a typical kind of city pollution.
It notes a pattern that appears near many cities. It works to support the conclusion, not illustrate an example of city pollution.

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LSAT PrepTest 143 Explanations

Section 1 - Logical Reasoning

Section 2 - Reading Comprehension

Section 3 - Logical Reasoning

Section 4 - Logical Reasoning

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