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


Can someone please explain this question? Thank you!


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!