easy · LSAT Reading Comprehension

In a passage, an author lays out two competing scientific theories, A and B. The author then presents evidence that undermines Theory A and cites a newly published study whose findings align with Theory B.

The author's primary purpose in the passage is most likely to

  1. build a case in favor of one of two rival theories at the expense of the other
  2. demonstrate that every scientific theory is eventually overturned by new evidence
  3. trace the chronological development of ideas in the relevant field
  4. show that both competing theories are ultimately untenable
  5. catalog the full range of studies that have ever addressed the two theories

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