Contrary to the expectations of most physicists in the world, the Michelson-Morley experiment
failed to prove the existence of the so-called "luminiferous ether," but they proved, rather, that it does not exist.
A. failed to prove the existence of the so-called "luminiferous ether," but they proved, rather, that it
There is no clear reference of the pronoun 'they'. The only plural noun in the sentence is 'physicists' and 'they' cannot logically refer to 'physicists'B. fails in proving the existence of the so-called "luminiferous ether," but rather proved that it
Inconsistent tense. 'fails in proving' is present continuous while 'rater proved' is pastC. did not prove that the so-called "luminiferous ether" exists, but proved that they, rather,
'they', a plural pronoun is incorrectly used to refer to 'luminiferous ether'D. does not prove that the so-called "luminiferous ether" exists, but proves instead about it
'proves instead about it' is incorrect constructionE. did not prove the existence of the so-called "luminiferous ether," but rather proved that it
Correct option. Tenses are consistent and pronoun 'it' refers correctly to 'luminiferous ether'