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25 Dec 2020, 13:12
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
78% (01:53) correct
22%
(02:18)
wrong
based on 440
sessions
History
Date
Time
Result
Not Attempted Yet
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.
Which one of the following, if true, would most strengthen the archaeologist’s argument?
(A) The Clovis points found in Siberia are older than any of those that have been found in North America.
(B) The Bering land bridge disappeared before any of the Clovis points found to date were made.
(C) Clovis points were more effective hunting weapons than earlier spear points had been.
(D) Archaeologists have discovered in Siberia artifacts that date from after the time paleohumans left Siberia.
(E) Some paleohuman groups that migrated from Siberia to North America via the Bering land bridge eventually returned to Siberia.
Which one of the following, if true, would most strengthen the archaeologist’s argument?
(A) The Clovis points found in Siberia are older than any of those that have been found in North America.
(B) The Bering land bridge disappeared before any of the Clovis points found to date were made.
(C) Clovis points were more effective hunting weapons than earlier spear points had been.
(D) Archaeologists have discovered in Siberia artifacts that date from after the time paleohumans left Siberia.
(E) Some paleohuman groups that migrated from Siberia to North America via the Bering land bridge eventually returned to Siberia.
28 Dec 2020, 06:12
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Akela
This is a Strengthen the Argument type of question.
The conclusion of the argument is that contrary to previous belief, the Clovis point was not invented in North America.
This conclusion is based on the information that after the last ice age, groups of paleohumans left Siberia and crossed the Bering land bridge, which no longer exists, into North America. The passage also states that archaeologists have discovered in Siberia a cache of Clovis points—the distinctive stone spear points made by paleohumans.
If the Bering land bridge disappeared before any of the Clovis points found to date were made, the Clovis points could not have been made in Siberia. They could very well have been made in North America. This option weakens the argument, so Option B can be eliminated.
Option C provides information that is irrelevant to the argument. The conclusion is not based on whether the points were effective for hunting. So, Option C can be eliminated.
Option D mentions ‘artifacts’, which are irrelevant to the argument. The argument is about ‘Clovis points’. The discovery of artifacts does not provide information to show that the Clovis point was not invented in North America. So, Option D can be eliminated.
Option E provides information that may seem to strengthen the argument. However, even if some paleohuman groups returned to Siberia, they may have made the Clovis points in North America. This information does not strengthen the argument. So, Option E can be eliminated.
If the Clovis points found in found in Siberia are older than any of those that have been found in North America, the argument that the Clovis point was not invented in North America is considerably strengthened. The Clovis points discovered in Siberia would have been made before the groups of paleohumans left Siberia.
Therefore, A is the most appropriate option.
Jayanthi Kumar.
13 Nov 2021, 02:30
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Akela
EXPLANATION FROM Fox LSAT
The logic here is, “Humans migrated across the Bering land bridge from Siberia into North America. The land bridge no longer exists. We found a bunch of spear points in Siberia. Therefore the spear point wasn’t invented in North America.”
This does seem to make sense, but only if you assume that the land bridge was a one-time-only, one-way sort of deal, like Moses using a stick made of magic to part the Red Sea. But this isn’t a children’s story. The Bering land bridge was real, and it existed for a long time. It’s possible that humans lived on the bridge for a period of time, or at the very least humans went back and forth across the bridge for a while. So it’s possible that the spear points were first invented in North America but some of them were left in Siberia.
We’re asked to strengthen the argument, so now I have to switch teams. I think the best way to do this is probably to defend against my reasoning above. If there was an answer like, “Humans only went across the land bridge once, in one direction (like Moses),” then that would be pretty good.
A) This strengthens the argument, because if the spear points found in Siberia are older than the spear points found in North America, why would we ever think they were invented in North America? This answer is not what we predicted, but I like it.
B) Tempting maybe, but no. Even if the bridge disappeared before the Siberian Clovis points were made, the Clovis point still could have been invented in North America, then brought back to Siberia, before the bridge disappeared.
C) Totally and completely irrelevant. If you picked this answer, you gotta call me, email me, so that I can stress the importance of paying attention to the conclusion of the argument. This is a million miles from being correct.
D) This one says, “Some artifacts were left in Siberia after humans left Siberia.” I think that can only be a weakener, because it suggests that people could have left Siberia, then gone back. We want a strengthener, and we already have strengtheners in A and B, so I’m not going to waste any more time with D.
E) Again, this is a weakener. A and B are better. A is better than B, so A is our answer. But it’s a close call between those two. If you narrowed it down to A and B here, congratulations. You’re getting there!
The answer is A.
