GRE Reading Comprehension

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Source: magoosh reading medium

An unknown simian virus recently killed off nearly half the human population of a remote jungle town. Because the disease spread at an alarming rate—victims usually exhibited signs within 8 hours of exposure, and many died within 36 hours—the simian virus, if an outbreak occurs again, is likely to cause more deaths than has any other previous virus.

Question List: 1

Which of the following pieces of information most effectively calls into question the validity of the conclusion?

  • A The Zairean strain of the Ebola virus, known as Zaire ebolavirus, has a mortality rate of nearly 75%.
  • B The village in which the outbreak of the unknown simian virus occurred is located in a country that has had several viral outbreaks in the last two decades.
  • C Viruses that have very little time to incubate before destroying their hosts tend not to lead to widespread epidemics, because quarantines are put in place before the disease can spread.
  • D The town in which the outbreak occurred had only fifty people, of whom twenty-four died.
  • E Viruses tend to be most destructive in densely populated areas, oftentimes spreading amongst thousands of people before any quarantine can be put in place.

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