Scientists have recently found evidence. . .

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Scientists have recently found evidence. . .

by Vincen » Thu Sep 14, 2017 1:55 pm
Scientists have recently found evidence that black holes-regions of space in which matter is so concentrated and the pull of gravity so powerful that nothing, not even light, can emerge from them-probably exist at the core of nearly all galaxies and the mass of each black hole is proportional to its host galaxy.

(A) exist at the core of nearly all galaxies and the mass of each black hole is proportional to
(B) exist at the core of nearly all galaxies and that the mass of each black hole is proportional to that of
(C) exist at the core of nearly all galaxies, and that the mass of each black hole is proportional to
(D) exists at the core of nearly all galaxies, and that the mass of each black hole is proportional to that of
(E) exists at the core of nearly all galaxies and the mass of each black hole is proportional to that of

The OA is B.

The option C is similar to B except by the "that" . What difference it does?
Source: — Sentence Correction |

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