LSAT 117 – Section 4 – Question 14

LSAT 117 - Section 4 - Question 14

October 2004

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT117 S4 Q14
+LR
Strengthen +Streng
Causal Reasoning +CausR
A
6%
155
B
84%
163
C
3%
157
D
1%
152
E
7%
157
129
141
153
 +Easier 147.423 +SubsectionMedium

Scientists hypothesize that a particular type of fat known as “P-fat” is required for the development of eyesight. Researchers were led to this hypothesis by observing that babies who are fed formulas low in P-fat tend to have worse eyesight than babies fed mother’s milk, which is high in P-fat. It has also been shown that babies that are five to six weeks premature tend to have worse eyesight than babies carried to term.

Summarize Argument: Phenomenon-Hypothesis
Scientists hypothesize that P-fat is necessary for developing eyesight. This is because babies fed formulas low in P-fat have worse eyesight than babies fed mother’s milk, which is high in P-fat. Moreover, premature babies have worse eyesight than babies carried to term.

Notable Assumptions
The scientists assume that P-fat is the only relevant difference between formulas and mother’s milk. If there was some other difference, then that difference could just as well account for the difference in eyesight. The scientists also assume that babies carried to term receive more P-fat than those born prematurely.

A
Adults whose diets lack P-fat tend to have worse eyesight than those whose diets are high in P-fat.
We’re talking about developing eyesight. We don’t care about maintaining eyesight.
B
A fetus typically receives high levels of P-fat from the mother during only the last four weeks of pregnancy.
Premature babies have worse eyesight than babies carried to term because they miss out on a critical fetus stage: the last four weeks, where fetuses receive high levels of P-fat. This strengthens the connection between P-fat and developing eyesight.
C
Babies whose mothers have poor eyesight do not tend to have poor eyesight themselves.
The scientists agree eyesight isn’t totally genetic. However, we’re specifically trying to strengthen the connection between P-fat and eyesight. This doesn’t do that for us.
D
Babies generally prefer mother’s milk to formulas low in P-fat.
We don’t care what babies prefer.
E
The eyesight of a fetus develops during the last trimester of pregnancy.
This weakens the scientists’ hypothesis. If eyesight develops during the last trimester, then the postnatal difference between formula and mother’s milk wouldn’t be relevant.

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LSAT PrepTest 117 Explanations

Section 1 - Reading Comprehension

Section 2 - Logical Reasoning

Section 3 - Logical Reasoning

Section 4 - Logical Reasoning

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