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September 2017 LSAT
Section 4
Question 25
Each major earthquake in this region has been preceded by a series of minor tremors. Since the region has recently ex...
Marissa
on April 12, 2020
Explanation
Can someone please explain this question? Thank you!
Reply
Ben
on April 12, 2020
Hi Marissa, thanks for the question
This is a Parallel question that requires us to match the sufficient/necessary reasoning in the passage with the correct answer choice.
The argument states that:
Major earthquake in region -> Preceded by series of minor tremors
It concludes:
Preceded by a series of minor tremors -> Major earthquake in region
This conclusion is a reversal of the information provided in the premises.
Answer choice E does the exact same thing.
Local outbreaks of this disease among humans -> Detection of high infection rates among local wildlife
Therefore, detection of high infection rates among local wildlife -> local outbreak of this disease among humans.
Same reversal.
I hope this helps. Please let me know if you have any other questions!
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