Advances in scientific understanding often do not build directly or smoothly in response to the data that are amassed, and in retrospect, after a major revision of theory, it may seem strange that a crucial hypothesis was long overlooked. ███
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Which one of the following ██ ████ ██████ ██████████ ██ ████ ███ ██████ █████ ██
the results of ███████████ ██ ███████ ███████████ ██ ███████ █████████ ██ ███ ███████ █████████ ███████ ████ ███ ████
This best captures the meaning of the phrase, because (A) describes the long-existing evidence that demonstrates Meitner’s insight. Meitner’s insight was that neutron bombardment involved splitting uranium atoms. These experiments had been occuring
the results of ███████ ███████████ ██ ███████ ███████████ ██ ███████ █████████ ██ ███████ ██ ████
This is too narrow, because the author asserts in the last line that the relevant evidence “had been present for some time, lacking mainly the right conceptual link.” By this phrase, the author indicates that the relevant data had been around for a relatively long time. This connects back to the author’s description in P1 of neutron bombardment experiments
the clear chemical ████████ ████ ████ ███ █████ ██ ████████ █████ ████████ ██ ███████ ███████████ ██ ███████
This is too narrow, because the author asserts in the last line that the relevant evidence “had been present for some time, lacking mainly the right conceptual link.” By this phrase, the author indicates that the relevant data had been around for a relatively long time. This connects back to the author’s description in P1 of neutron bombardment experiments
the fact that ███ ███ ██ ███ ██████ ██ ███████ ███ ████████ ██ ███ ██████ ██ ██████ ███ ██████████ ███ ███ ████ ██ ███ ██████ ██ █████ █████████ ██ █ ███████ ███████
This is too narrow, because the author asserts in the last line that the relevant evidence “had been present for some time, lacking mainly the right conceptual link.” By this phrase, the author indicates that the relevant data had been around for a relatively long time. This connects back to the author’s description in P1 of neutron bombardment experiments
the fact that ███████████ ████████ ██ ███████ ███████████ ██ ███████ ████ ████████████ ███ ██ ████
The “relevant evidence” would, at a minimum, be evidence that supports Meitner’s insight that neutron bombardment involved splitting the uranium atoms. So what matters is that uranium could be split from neutron bombardment. But the lack of identification of the chemical products produced by neutron bombardment isn’t evidence that atoms can be split. In any case, (E) also ignores the relationship between “the relevant evidence” and the experiments described in P1. The evidence described in the last line “had been present for some time,” so it must refer to the long-existing evidence of atom-splitting.
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