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