GMAT Sentence Correction- Although When a Hagfish is Threatened, it Will Secrete Slime that is Small in Quantity

Question: Although when a hagfish is threatened, it will secrete slime that is small in quantity, it expands several hundred times as it absorbs seawater, forming a slime ball that can coat the gills of predatory fish and either suffocate them or distress them enough to make them flee.

A) Although when a hagfish is threatened, it will secrete slime that is small in quantity,
B) Although a small quantity of slime is secreted by the hagfish, when threatened
C) Although, when threatened, a hagfish will secrete slime that is small in quantity,
D) Although the slime secreted by a threatened hagfish is small in quantity,
E) Although the hagfish secretes a small quantity of slime when threatened,

“Although when a hagfish is threatened, it will secrete slime that is small in quantity”- is a GMAT sentence correction question. These types of questions contain grammatical errors and we have to choose the correct statement from the options. This topic is the GMAT sentence correction comes with four options and candidates need to choose the one which is correct. GMAT sentence correction is a part of GMAT verbal. It checks whether the candidate is able to decode the inaccuracy in the sentence. It also checks if they are able to bring out an idea or meaning of the context.

Correct Answer: D
Explanation: From the topic given above which states that Although when a hagfish is threatened, it will secrete slime that is small in quantity, it expands several hundred times as it absorbs seawater, forming a slime ball that can coat the gills of predatory fish and either suffocate them or distress them enough to make them flee.
Error Analysis:
It doesn't make sense for "it" to refer to "hagfish"--- this is because it's not the hagfish that expands several hundred times as it absorbs seawater. Rather, it's the slime that expands several hundred times as it absorbs seawater. Hence the errors are-

1. Use of “it” is wrong considering that there are two different things you might refer to.
2. Incorrectly referring to a hagfish using it

Choice A: Although when a hagfish is threatened, it will secrete slime that is small in quantity- the use of the word “it” in this sentence are made differently for 1st time and 2nd time.
Choice B: Although a small quantity of slime is secreted by the hagfish, when threatened. For this sentence, it turns out to be ambiguous
Choice C: Although, when threatened, a hagfish will secrete slime that is small in quantity- it is wrongly referring hagfish as the one secreting small quantities of slime,
Choice D: Although the slime secreted by a threatened hagfish is small in quantity,: this sentence absolutely correct perfect without ambiguity
Choice E: Although the hagfish secretes a small quantity of slime when threatened: the hagfish here is referred incorrectly.

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