Bunuel
Due to differences in physiology and metabolic response, women who diet and exercise do not lose visceral fat, the adipose tissue
surrounding internal organs, as efficiently as men do.
A. surrounding internal organs, as efficiently as men do
B. surrounding internal organs, as efficiently as men lose weight
C. that surrounds internal organs, as efficient as men
D. surrounding internal organs, as men's efficiency at visceral fat loss
E. that surround internal organs, as efficiently as men do
OFFICIAL EXPLANATION
Due to differences in physiology and metabolic response, women who diet and exercise do not lose visceral fat, the adipose tissue surrounding internal organs, as efficiently as men do. A. surrounding internal organs, as efficiently as men do
This sentence makes correct grammatical use of a comparative structure and logically compares the efficiency of losing visceral fat in both men and women.B. surrounding internal organs, as efficiently as men lose weight
Incorrect.
This answer choice is illogical. The comparative construction requires that the things compared be logically parallel.
The original sentence compares the efficiency with which women and men lose visceral fat. The corrected sentence, however, compares the efficiency with which women lose visceral fat with men's general weight loss (as men lose weight).
What helps us identify this question as a Comparative question as well as identify the mistake is the following Stop Sign:
C. that surrounds internal organs, as efficient as men
Incorrect.
This answer choice is grammatically incorrect. A comparative section beginning with as should always include a conjugated verb. The comparative section in this answer choice (as efficient as men), however, does not.
In addition, an adverb should be used to describe a verb. In this sentence, an adjective (efficient) is used to describe a verb (lose).
Incidentally, the use of the relative clause "that surround" to replace the V-ing modifier "surrounding" is a non-issue - both are interchangeable in this particular context. This answer choice is eliminated purely due to the reasons mentioned above. D. surrounding internal organs, as men's efficiency at visceral fat loss
Incorrect.
This answer choice is grammatically incorrect. A comparative section beginning with as should always include a conjugated verb. The comparative section in this answer choice (as men's efficiency at visceral fat loss), however, does not.E. that surround internal organs, as efficiently as men do
Incorrect.
This answer choice is grammatically incorrect. The plural verb surround does not agree with the singular subject tissue.
Incidentally, the use of the relative clause "that surround" to replace the V-ing modifier "surrounding" is a non-issue - both are interchangeable in this particular context. This answer choice is eliminated purely due to the subject verb agreement problem mentioned above.