LSAT 129 – Section 2 – Question 22

LSAT 129 - Section 2 - Question 22

June 2009

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Question QuickView	Type	Tags	Answer Choices	Curve	Question Difficulty	Psg/Game/S Difficulty	Explanation
PT129 S2 Q22	+LR	Strengthen +Streng Link Assumption +LinkA	A 73% 165 B 22% 165 C 1% 154 D 2% 154 E 3% 159	120 136 168	+Easier	144.702 +SubsectionEasier

Archaeologist: After the last ice age, groups of paleohumans left Siberia and crossed the Bering land bridge, which no longer exists, into North America. Archaeologists have discovered in Siberia a cache of Clovis points—the distinctive stone spear points made by paleohumans. This shows that, contrary to previous belief, the Clovis point was not invented in North America.

Summarize Argument

The archaeologist concludes that the Clovis point wasn’t invented in North America. This is because there’re Clovis points in Siberia, from which paleohumans came to North America on a land bridge that no longer exists.

Notable Assumptions

The archaeologist assumes that paleohumans never crossed the land bridge back to Siberia. If this were the case, then the Clovis point could’ve been invented in North America before being transported back to Siberia. The archaeologist also assumes that the cache of Clovis points wasn’t transported there at a much later time period, perhaps during trade between Siberian and North American peoples.

The Clovis points found in Siberia are older than any of those that have been found in North America.

The Siberian Clovis points predate any Clovis points found in North America. It thus seems likely they were invented in Siberia before the technique was brought over to North America.

The Bering land bridge disappeared before any of the Clovis points found to date were made.

This weakens the author’s argument. If the Clovis point was invented in Siberia, how did it make its way to North America after the land bridge had disappeared?

Clovis points were more effective hunting weapons than earlier spear points had been.

We don’t care how effective Clovis points were.

Archaeologists have discovered in Siberia artifacts that date from after the time paleohumans left Siberia.

Those artifacts were likely created by a different group of humans.

Some paleohuman groups that migrated from Siberia to North America via the Bering land bridge eventually returned to Siberia.

This is irrelevant. For this to strengthen the author’s argument, we would need to know paleohumans created the Clovis point in Siberia before going to North America.

LSAT 129 – Section 2 – Question 22

LSAT 129 - Section 2 - Question 22

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LSAT PrepTest 129 Explanations

Section 1 - Logical Reasoning

Section 2 - Logical Reasoning

Section 3 - Logical Reasoning

Section 4 - Reading Comprehension

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