LSAT 102 – Section 4 – Question 26

LSAT 102 - Section 4 - Question 26

June 1998

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT102 S4 Q26
+LR
Must be false +MBF
Math +Math
A
8%
161
B
8%
162
C
11%
161
D
10%
162
E
64%
169
154
162
170
 +Hardest 146.127 +SubsectionMedium

At night, a flock of crows will generally perch close together in a small place—often a piece of wooded land—called a roost. Each morning, the crows leave the roost and fan out in small groups to hunt and scavenge the surrounding area. For most flocks, the crows’ hunting extends as far as 100 to 130 kilometers (60 to 80 miles) from the roost. Normally, a flock will continue to occupy the same roost for several consecutive years, and when it abandons a roost site for a new one, the new roost is usually less than eight kilometers (five miles) away.

Summary
At night, a flock of crows will usually perch in a small place called a roost.
Every morning, the crows leave the roost to hunt and scavenge. Most flocks of crows keep their hunting to within 100 to 130 km from the roost.
Normally a flock of crows stays in the same roost for several years.
When a flock abandons a roost to form a new roost, the new roost is usually less than 8 km away from the abandoned roost.

Notable Valid Inferences
There’s no clear inference from the stimulus. I’d rely on process of elimination to identify which answer can most justifiably be rejected.

A
Crows will abandon their roost site only in response to increases in the population of the flock.
No reason to reject. We have no reason to think population changes aren’t requires in order for crows to abandon their roost.
B
When there is a shortage of food in the area in which a flock of crows normally hunts and scavenges, some members of the flock will begin to hunt and scavenge outside that area.
No reason to reject. Although we know crows typically stay within a certain hunting range, that doesn’t suggest some crows won’t go outside that range.
C
Most of the hunting and scavenging that crows do occurs more than eight kilometers (five miles) from their roost.
No reason to reject. We know the general range of hunting, but we don’t know anything about where, within that range, crows do most of their hunting and scavenging.
D
Once a flock of crows has settled on a new roost site, it is extremely difficult to force it to abandon that site for another.
No reason to reject. We don’t know anything about the difficulty of getting a flock to abandon a roost.
E
When a flock of crows moves to a new roost site, it generally does so because the area in which it has hunted and scavenged has been depleted of food sources.
Have reason to reject. When crows move to a new roost, the new one is usually less than 8 km away from the old roost. That means the hunting ranges of the old and new roosts largely overlap. That suggests the crows aren’t motivated by looking for new food sources when they move.

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LSAT PrepTest 102 Explanations

Section 1 - Reading Comprehension

Section 2 - Logical Reasoning

Section 3 - Logical Reasoning

Section 4 - Logical Reasoning

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