LSAT 127 – Section 1 – Question 01

LSAT 127 - Section 1 - Question 01

December 2003

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT127 S1 Q01
+LR
+Exp
Strengthen +Streng
Causal Reasoning +CausR
A
1%
154
B
1%
155
C
1%
155
D
96%
163
E
1%
155
125
134
143
 +Easiest 147.168 +SubsectionMedium

Many newborn babies have a yellowish tinge to their skin because their blood contains a high level of the pigment bilirubin. One group of doctors treats newborns to reduce high levels of bilirubin, since bilirubin, if it enters the brain, might cause the tetanus that sometimes occurs in newborns. However, a second group of doctors argues for allowing bilirubin levels in newborn babies to remain high, since the brain’s own natural defenses normally prevent bilirubin from entering.

Summarize Argument
The second group of doctors argue that bilirubin levels should be allowed to remain high in newborns. This is because the brain’s natural defenses prevent bilirubin from entering the brain.

Notable Assumptions
The second group of doctors assume the only reason to lower bilirubin levels in newborns would be to prevent bilirubin from entering the brain. This means they assume bilirubin is otherwise entirely neutral or even beneficial to newborns.

A
The treatment that most effectively reduces high levels of bilirubin in newborns has no known negative side effects.
These doctors are advocating for no treatment at all.
B
Some diseases that occur in newborns can weaken the brain’s natural defenses and allow bilirubin to enter.
This weakens the doctors’ argument. If bilirubin could in fact enter the brain, then bilirubin should be removed.
C
In newborns the pigment bilirubin, like other pigments, occurs not only in the blood but also in fluids involved in digestion.
The doctors are talking about removing bilirubin, generally. We don’t care if it’s in the blood or in digestive fluids.
D
Bilirubin neutralizes certain potentially damaging substances to which newborns are exposed at birth.
Bilirubin carries a distinct benefit for newborns. Thus, bilirubin levels shouldn’t be lowered in newborns.
E
Among doctors who recommend treating newborns to reduce high levels of bilirubin, there is general agreement about what levels should be considered excessively high.
We don’t care what these doctors think. We’re talking about the second group of doctors.

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LSAT PrepTest 127 Explanations

Section 1 - Logical Reasoning

Section 2 - Logical Reasoning

Section 3 - Logical Reasoning

Section 4 - Reading Comprehension

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