A student reads the following passage: "The early proponents of germ theory were not celebrated—they were ridiculed. Semmelweis was institutionalized. Lister was dismissed as eccentric. Yet within two decades of Pasteur's experiments, the medical establishment had fully reversed its position. What changed was not the evidence, which had always been there, but the institutional readiness to accept it." What is the PRIMARY structural purpose of the final sentence?
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A
To introduce a counterargument that undermines the passage's central claim
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B
To reframe the preceding examples as evidence for a more abstract conclusion
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C
To provide a chronological transition to the next phase of the argument
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D
To contrast the failures of individual scientists with collective scientific progress