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Re: During an ice age, the buildup of ice at the poles and the drop in wat [#permalink]
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Hello Everyone!

Let's tackle this question, one thing at a time, and narrow down our options quickly so we know how to answer questions like this when they pop up on the GMAT! To begin, let's take a quick look at the question and highlight any major differences between the options in orange:

During an ice age, the buildup of ice at the poles and the drop in water levels near the equator speed up the Earth’s rotation, like a spinning figure skater whose speed increases when her arms are drawn in.

(A) like a spinning figure skater whose speed increases when her arms are drawn in
(B) like the increased speed of a figure skater when her arms are drawn in
(C) like a figure skater who increases speed while spinning with her arms drawn in
(D) just as a spinning figure skater who increases speed by drawing in her arms
(E) just as a spinning figure skater increases speed by drawing in her arms

After a quick glance over the options, there are a few things we can focus on to narrow down our choices:

1. like / as
2. whose speed increases / increased speed / who increases speed / increases speed
3. her arms are drawn in / her arms drawn in / drawing in her arms


Since #1 is an "either/or" split, let's start there. No matter which one we choose, we'll eliminate either 2 or 3 options rather quickly. There is a difference between how you use like vs. as:

Like = used as a preposition
As = used as a subordinating conjunction

Since we're looking for a word that joins two clauses together, we need to use a subordinating conjunction. Let's see how our options stack up:

(A) like a spinning figure skater whose speed increases when her arms are drawn in
(B) like the increased speed of a figure skater when her arms are drawn in
(C) like a figure skater who increases speed while spinning with her arms drawn in
(D) just as a spinning figure skater who increases speed by drawing in her arms
(E) just as a spinning figure skater increases speed by drawing in her arms

There you go - you can eliminate options A, B, & C because they use the preposition "like" instead of the conjunction "as" to join two clauses.

Now that we're only down to 2 options, let's see what differences we can find and explore those:


(D) just as a spinning figure skater who increases speed by drawing in her arms

This option is INCORRECT because the clause after "as" MUST be an independent clause - and this one is missing a verb!

(E) just as a spinning figure skater increases speed by drawing in her arms

This option is CORRECT because the clause after "as" is an independent clause, which is what we need when using conjunctions!


There you have it - option E is the correct choice! By focusing first on the "either/or" split, we eliminated several options that would have made this question much harder to solve quickly!


Don't study for the GMAT. Train for it.
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Re: During an ice age, the buildup of ice at the poles and the drop in wat [#permalink]
this is old question from og.
like is used to say that two things do the same action
as is used to say two actions are done in the same way.
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Re: During an ice age, the buildup of ice at the poles and the drop in wat [#permalink]
TommyWallach's explanation is really useful. Thanks for the help!
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Re: During an ice age, the buildup of ice at the poles and the drop in wat [#permalink]
Comparing Actions use 'as'
comparing nouns use 'like'
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During an ice age, the buildup of ice at the poles and the drop in wat [#permalink]
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Sentence Analysis




The sentence talks about what happens during an ice age. Two things (the buildup of ice at the poles and the drop in water levels near the equator) speed up the earth’s rotation. The sentence then introduces a comparison/similarity. The sentence seems to present a similarity between how these two things speed up the earth’s rotation and how a skater increases her speed by drawing her arms in.

The sentence is incorrect for the following reasons:

1. The comparison is not presented in the right way. The way the sentence is written, “a spinning figure” is compared with the compound subject “the buildup of ice and the drop in water levels”, leading to a meaning that a spinning figure also speeds up the Earth’s rotation. Very interesting! But not logical! (Please note that many people, even some experts, believe that “a spinning figure” is being compared with “Earth’s rotation” here. However, this understanding is wrong. “Comma+like” at the end of a clause always goes back to the subject of the clause when “like” is used to present a comparison. The official explanation for this question also supports our understanding.)

2.The sentence also has a quite significant quality issue. The passive structure used in “a spinning figure skater whose speed increases when her arms are drawn in” indicates that the skater doesn’t increase her speed or draws her arms in. It seems some other entity draws her arms in, and as a result, her speed increases. A much more sensible way to write this idea would be: a spinning figure skater who increases her speed by drawing her arms in.

Option Analysis


A. like a spinning figure skater whose speed increases when her arms are drawn in
Incorrect. For the reasons mentioned above.

B. like the increased speed of a figure skater when her arms are drawn in
Incorrect. Both the issues mentioned in the original sentences are present in this option, albeit in slightly different ways. Besides, funnily, we don’t even know from this option whether the skater is spinning or not!

C. like a figure skater who increases speed while spinning with her arms drawn in
Incorrect. For the following reasons:

    1. The first error of the original sentence.

    2. “With her arms drawn in” seems to modify “spinning”, not “increases”. Thus, the option means that the skater increases speed while spinning in a particular way. However, how does she increase speed? We don’t know. This seems logically much inferior to an option that tells us how she increases speed..

D. just as a spinning figure skater who increases speed by drawing in her arms
Incorrect. Here, “as” is followed by a noun (skater), which is followed by a relative clause modifier. “As” followed by a noun is not used to present a comparison. To present a comparison, “as” needs to be followed by a clause or a prepositional phrase (in case subject and verb are elided).

E. just as a spinning figure skater increases speed by drawing in her arms
Correct.
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Re: During an ice age, the buildup of ice at the poles and the drop in wat [#permalink]
But if we see in (A), we a spinning figure skater, where spinning is just a participle and still the entire word is "spinning figure skater" with like modifying figure skater?
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Re: During an ice age, the buildup of ice at the poles and the drop in wat [#permalink]
lakshya14 wrote:
But if we see in (A), we a spinning figure skater, where spinning is just a participle and still the entire word is "spinning figure skater" with like modifying figure skater?


Hi lakshya14
To eliminate A, it's better if you understand the logic.
If you see option A, what are we comparing exactly ?
the buildup of ice at the poles and the drop in water levels near the equator- an action
compared to
a spinning figure skater- a noun

Now this comparison is illogical, hence this option is wrong.
You can compare noun with noun, and verb with verb.

Hope this helps :)
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Re: During an ice age, the buildup of ice at the poles and the drop in wat [#permalink]
Expert Reply
lakshya14 wrote:
But if we see in (A), we a spinning figure skater, where spinning is just a participle and still the entire word is "spinning figure skater" with like modifying figure skater?



@lakshya14-

I highly recommend in sentences such as this you look to the meaning to understand what is logically trying to be expressed instead of looking to the grammar.

In option A we see that the process that speeds up the Earth's rotation is the build-up of ice at the poles and the drop in water by the equator. This clearly a process that happens and this process speeds up the earth's rotation. This process is being compared to a noun entity "spinning figure skater." We cannot compare a process to an entity. We have to compare apples to apples.

Therefore the logical intended comparison is to compare the process that speeds up the Eart's rotation to the process that speeds up the spinning figure skater.

The correct answer E makes this comparison in a grammatically correct manner!

I hope this helps!
Cheers!
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Re: During an ice age, the buildup of ice at the poles and the drop in wat [#permalink]
Just As ...So -- Isn't it the proper idiom?
Can we use just as in isolation?
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Re: During an ice age, the buildup of ice at the poles and the drop in wat [#permalink]
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ArupSR wrote:
Just As ...So -- Isn't it the proper idiom?
Can we use just as in isolation?



Hello ArupSR,

Wish you a very Happy 2021. :-)

I am not sure if you still have this question. Here is my response nonetheless.

Both expressions just as X s Y and as can be used to present comparison. In fact, using just as in comparison questions is a very common practice in SC problems.


Hope this helps. :-)
Thanks.
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Re: During an ice age, the buildup of ice at the poles and the drop in wat [#permalink]
Hi experts,

A quick question regarding the placement of "like a spinning figure skater [...]" Does it matter where this goes?

In A, B, and C, it's placed at the end of the sentence but would there be any difference if it was in the beginning of the sentence? And more broadly, is there ever a material difference between putting "like X" / "as X does" in the beginning and "like X" / "as X does" at the end? Or would this just be a red herring?
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During an ice age, the buildup of ice at the poles and the drop in wat [#permalink]
Hi GMATGuruNY IanStewart AjiteshArun MartyTargetTestPrep - want to first understand a fundamental concept undelying this SC question
(in relation to option A / B and C)

Analogy -

a) Sam likes Toronto, like New York City

Is this a fair comparison ? I thought it was fair becuse Toronto = NYC are cities and comparable obviously.
OR
is above sentence wrong because based on the construction, New York City is being forecfully compared to subject noun, Sam ?

a) Sam likes Toronto, like John

Please confirm but i believe this is a fair comparison because this is saying -- Sam and John both like Toronto
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Re: During an ice age, the buildup of ice at the poles and the drop in wat [#permalink]
Expert Reply
jabhatta2 wrote:
Hi GMATGuruNY IanStewart AjiteshArun MartyTargetTestPrep - want to first understand a fundamental concept undelying this SC question
(in relation to option A / B and C)

Analogy -

a) Sam likes Toronto, like New York City

Is this a fair comparison ? I thought it was fair becuse Toronto = NYC are cities and comparable obviously.
OR
is above sentence wrong because based on the construction, New York City is being forecfully compared to subject noun, Sam ?

a) Sam likes Toronto, like John

Please confirm but i believe this is a fair comparison because this is saying -- Sam and John both like Toronto


Hello jabhatta2,

We hope this finds you well.

Having gone through the question and your query, we believe we can resolve your doubt.

Neither of these analogy sentences is correct.

Both compare the action of liking Toronto to a noun; the second could be made correct if it was written as "Like John, Sam likes Toronto."; now, "Like" compares "John" and "Sam".

To understand the concept of "Like" vs "As" on GMAT, you may want to watch the following video (~1 minute):



All the best!
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Re: During an ice age, the buildup of ice at the poles and the drop in wat [#permalink]
During an ice age ( Prepositional Phrase modifying the main verb), the buildup of ice at the poles ( first subject) and the drop in water levels near the equator ( second subject) speed up ( main verb) the Earth’s rotation, like a spinning figure skater ( like comparison structure-noun) whose speed increases when her arms are drawn in ( DC clause )


(A) like a spinning figure skater whose speed increases when her arms are drawn in ( Like the comparison is wrong here. We are comparing actions here )

(B) like the increased speed of a figure skater when her arms are drawn in ( the comparison is wrong, also the construction is not able to portray the intended meaning )

(C) like a figure skater who increases speed while spinning with her arms drawn in ( same issue as option A )

(D) just as a spinning figure skater who increases speed by drawing in her arms ( we should compare two actions, not a noun and an action)

(E) just as a spinning figure skater increases speed by drawing in her arms ( Correct)
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Re: During an ice age, the buildup of ice at the poles and the drop in wat [#permalink]
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