that extra “that”
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
OA is B
why is (see bolded words) exist at the core of nearly all galaxies and that the mass of each black hole is proportional to that of “required? I chose B since I though the extra “that” is not required. How is the meaning altered using the extra “that”.
Please help.
found evidence that black holes probably exist at the core of nearly all galaxies and that the mass of each black hole is proportional to that of
the 2 Boldface ‘that’s make the parallelism unambiguous and hence B is better than A. However, they are not essential.
The main problem is with “that of”
Note that you are comparing mass to mass; not mass to galaxy.
Hence, B is correct.
