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Question 17·200 Super-Hard SAT Reading Questions·Information and Ideas

For decades, historians treated an unusual sentence shared by an anonymous May 1846 newspaper editorial and an entry labeled “February 1846” in botanist Nia Voss's diary as evidence that the editorial's author had seen Voss's private writing. A conservator later determined, however, that the diary was assembled in 1851 from handwritten copies of Voss's loose field sheets. Moreover, the paper containing the copied February entry was not manufactured until August 1846. That entry repeats a misspelled plant name printed in the May editorial but found nowhere in Voss's surviving field materials; an authentic February field sheet records the same botanical observation but contains neither the unusual sentence nor the misspelling. Together, these findings suggest that ______

Which choice most logically completes the text?