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Sentence Correction: Comparatives - As vs. Like

ABS, who is a fairly resistant material, has a wide range of applications, as many plastics do.

This answer choice is grammatically incorrect. The relative pronoun who cannot begin a relative clause that modifies a non-human noun (ABS).  

What helps us identify this question as a Relative Clause question as well as identify the mistake is the following Stop Sign:

who, which, that, whose, whom

While this answer choice corrects the original Relative Clause mistake by using the correct relative pronoun which to refer to a non-human noun, it is grammatically incorrect. A comparative section beginning with as should always include a conjugated verb. The comparative section in this answer choice (as many plastics), however, does not include a verb.

What helps us identify this question as a Comparative question as well as the mistake is the following Stop Sign:

Like, unlike, than, as

While this answer choice corrects the original Relative Clause mistake by using the correct relative pronoun which to refer to a non-human noun, it is grammatically incorrect. A comparative section beginning with as should always include a conjugated verb. The comparative section in this answer choice (as many plastics), however, does not include a verb.

What helps us identify this question as a Comparative question as well as the mistake is the following Stop Sign:

Like, unlike, than, as

Great work!

This answer choice corrects the original Relative Clause mistake by using the correct relative pronoun (which) to refer to a non-human noun.

While this answer choice corrects the original Relative Clause mistake by using the correct relative pronoun which to refer to a non-human noun, it is wordy and creates Redundancy with the phrase has an application range that is wide.

ABS, who is a fairly resistant material, has a wide range of applications, as many plastics do
ABS, which is a fairly resistant material, has a wide range of applications, as many plastics
As many plastics do, ABS, which is a fairly resistant material, has a wide range of applications
ABS, which is a fairly resistant material, has an application range that is wide, as many plastics do
As many plastics, ABS, which is a fairly resistant material, has a wide range of applications