LSAT 137 – Section 4 – Question 05

LSAT 137 - Section 4 - Question 05

October 2012

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT137 S4 Q05
+LR
Most strongly supported +MSS
Causal Reasoning +CausR
Net Effect +NetEff
A
93%
164
B
2%
156
C
0%
148
D
3%
155
E
2%
156
129
138
148
 +Easier 146.883 +SubsectionMedium

A natural history museum contains several displays of wild animals. These displays are created by drying and mounting animal skins. In some of the older displays, the animals’ skins have started to deteriorate because of low humidity and the heat of the lights. The older displays are lit by tungsten lamps but the newer ones are lit by compact fluorescent lamps designed for use in museums. These lamps give off as much light as the tungsten lamps but less heat.

Summary
A natural history museum has several displays of wild animals that are made by drying and mounting animal skins. In some of the older displays, the skins have begun to wear out because of low humidity and the heat from the lamps. The older displays use tungsten lamps, but the newer ones use compact fluorescent lamps made for museums. These fluorescent lamps give off the same amount of light as the tungsten lamps but produce less heat.

Strongly Supported Conclusions
The tungsten lamps contribute to the deterioration of the older displays.
Some of the older displays will last longer if the tungsten lamps are replaced by the compact fluorescent lamps.
The animal skins in the newer displays will probably deteriorate more slowly than those in the older displays.

A
Some of the older displays will last longer if the tungsten lamps that illuminate them are replaced by compact fluorescent lamps.
This is strongly supported. The older displays are deteriorating in part because of the heat of the tungsten lamps. Because the compact fluorescent lamps produce less heat than the tungsten lamps, the older displays would last longer if the tungsten lamps are replaced.
B
The displays that are lit by many compact fluorescent lamps are more prone to deterioration than the displays that are lit by a few tungsten lamps.
This is unsupported. All we know about the compact fluorescent lamps is that they produce less heat than the tungsten lamps and are thus better for the displays. We do not know whether a display lit by many compact fluorescent lamps might be more prone to deterioration.
C
More of the displays are lit by compact fluorescent lamps than are lit by tungsten lamps.
This is unsupported. The stimulus gives us no information about how many displays are lit by each kind of lamp. We know only that “newer displays” are lit by compact fluorescent lamps and “older displays” are lit by tungsten lamps.
D
The newer displays will not be subject to deterioration because of low humidity.
This is unsupported. The stimulus tells us that low humidity contributes to deterioration, but it does not tell us whether the type of lamp affects humidity in any way. We know only that the lamps produce different amounts of heat.
E
The humidity in the museum is lower today than it was when the older displays were first put in place.
This is unsupported. We know that low humidity contributes to deterioration, but we do not know anything about the museum’s humidity levels over time.

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LSAT PrepTest 137 Explanations

Section 1 - Reading Comprehension

Section 2 - Logical Reasoning

Section 3 - Logical Reasoning

Section 4 - Logical Reasoning

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