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Sentence Correction: Comparatives - As vs. Like

A small but promising internet initiative ceased its operations because, as many companies with unfinished products do, it failed to obtain the investments necessary to complete its research and development and reported expenses that amounted to a sum of $890,000 a year.

This answer choice is stylistically flawed. Using both amount to and a sum is redundant and is one of the Specific Redundancies that should always be corrected.

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

amount to a sum

You're absolutely right!

This answer choice corrects the stylistic flaw in the original sentence. Using both amount to and a sum is redundant. The answer choice also uses the correct form of comparison, by pairing a conjugated verb do with the comparative as.

Although this answer choice corrects the original Stylistic flaw by not using both amount to and sum, 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 companies with unfinished products), however, does not include a conjugated 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

Although this answer choice corrects the original Stylistic flaw by not using both amount to and sum, 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 companies with unfinished products), however, does not include a conjugated 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

Although this answer choice corrects the original Stylistic flaw by not using both amount to and sum, it is grammatically incorrect. The like section should not include a conjugated verb. In this answer choice, however, the like section includes a conjugated verb (like many companies with unfinished products do).

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

Like, unlike, than, as

its operations because, as many companies with unfinished products do, it failed to obtain the investments necessary to complete its research and development and reported expenses that amounted to a sum of
its operations because, as many companies with unfinished products, it failed to obtain the investments necessary to complete its research and development and reported expenses that amounted to
its operations because, like many companies with unfinished products do, it failed to obtain the investments necessary to complete its research and development and reported expenses that amounted to
to operate because it failed, as many companies with unfinished products do, to obtain the investments necessary to complete its research and development and reported expenses that amounted to
its operations because it failed to obtain the investments necessary to complete its research and development, as many companies with unfinished products, and reported expenses that amounted to