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By skimming along the top of the atmosphere a proposed new style of a 22 Oct 2020, 20:38
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D) A proposed new style of aircraft, say its proponents, could fly between most points on Earth in under two hours because of its skimming along the top of the atmosphere.
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If D option says:

D’) A proposed new style of aircraft, say its proponents, could fly between most points on Earth in under two hours DUE TO skimming OF THE AIRCRAFT along the top of the atmosphere.
Change 1: due to : modify noun | because of : modify action
Change2: remove pronoun ambiguity and awkwardness "its skimming"

Could D' be correct answer as well? i want to make sure i rejected D due to correct reasons?

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By skimming along the top of the atmosphere a proposed new style of a 22 Oct 2020, 22:47
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imSKR
If D option says:

D’) A proposed new style of aircraft, say its proponents, could fly between most points on Earth in under two hours DUE TO skimming OF THE AIRCRAFT along the top of the atmosphere.
Change 1: due to : modify noun | because of : modify action
Change2: remove pronoun ambiguity and awkwardness "its skimming"

Could D' be correct answer as well? i want to make sure i rejected D due to correct reasons?

MartyTargetTestPrep AjiteshArun EMPOWERgmatVerbal
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Hi imSKR,

I don't think that a due to is a particularly good idea there (a new style of aircraft... could fly is a clause). That said, I don't treat this as an absolute.

There are other issues in this new version of option D, and that means that option A remains the best option, the one that we should mark.
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By skimming along the top of the atmosphere a proposed new style of a 09 Jan 2021, 16:26
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AndrewN
Hello, adkikani. I would be happy to share my thoughts on this one. My in-line responses are below.

adkikani
chetan2u VeritasKarishma AjiteshArun MentorTutoring

Could you advise what is incorrect in below approach?

Quote:
By skimming along the top of the atmosphere, a proposed new style of aircraft could fly between most points on Earth in under two hours, according to its proponents.
Meaning: This sentence presents a fact. According to proponents of an aircraft, the aircraft can fly between most points on Earth in under two hours.
It is able to do so because it can skim along the top of atmosphere.
I ruled this out since I could not connect opening modifier with main subject: Is the subject style or style of aircraft. How can later be a subject since it is a prepositional phrase preceded by of
There are cases in which the object of the preposition acts as the subject of the sentence. This typically happens with unqualified counting nouns, such as number, as in, a number of students have... (Another sentence with a number could adopt a singular subject-verb agreement, as in, A number has the following features: ...) The subject in this sentence is not a number, but a number of students. In the case above, style is not acting as a standalone subject. A style of what? Art? Teaching? We need to know the object of the preposition to qualify style, and aircraft fits perfectly.

Quote:
Quote:
D) A proposed new style of aircraft, say its proponents, could fly between most points on Earth in under two hours because of its skimming along the top of the atmosphere.
Here because of correctly modifies action: could fly.
The both its refers to aircraft in possessive form. I chose this as ans.
What does because of its achieve that by on its own does not? Remember, clarity of meaning is your primary consideration in SC, and if a terser version in a certain split expresses vital meaning, then there is no reason you should change it unless something else in that answer choice is clearly incorrect. If you replace each instance of its with a possessive the aircraft's, you can see how the latter usage presents problems:

A proposed new style of aircraft, say the aircraft's proponents, could fly between most points on Earth in under two hours because of the aircraft's skimming along the top of the atmosphere.

I was expecting a feature of the aircraft to follow the second instance of the aircraft's, but instead, I get hard-to-follow drivel. A clear and concise version of the sentence might say,

A proposed... in under two hours because it could skim...

Quote:
Quote:
E) According to its proponents, skimming along the top of the atmosphere makes it possible that a proposed new style of aircraft could fly between most points on Earth in under two hours.
The first its refers to aircraft in possessive form. The second it is a placeholder pronoun: E.g. it is raining.
Since I wanted to stress on a causal relationship, I chose D.
It is not that I disagree with your points, but above, I am expecting the aircraft, not skimming, to be the subject of the main clause, the one that the introductory phrase modifies. This is an easy choice to eliminate.

I hope that helps. If you have further questions, feel free to ask.

- Andrew
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Got it correct but got worried about the last modifier in (A) "according to its proponent", its not a dangling modifier, is this correct?
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By skimming along the top of the atmosphere a proposed new style of a 09 Jan 2021, 16:58
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lakshya14
Got it correct but got worried about the last modifier in (A) "according to its proponent", its not a dangling modifier, is this correct?
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Hello, lakshya14. No, according to its proponents is not a dangling modifier, since it is a phrase that comments on the preceding clause more as an aside and could really fit into the sentence in various places. The skimming phrase, on the other hand, must modify the aircraft itself, or that would indeed pose a problem. All of the following are reasonable variations of the original sentence:

Original: A) By skimming along the top of the atmosphere, a proposed new style of aircraft could fly between most points on Earth in under two hours, according to its proponents.

Variant #1: According to its proponents, a proposed new style of aircraft could, by skimming along the top of the atmosphere, fly between most points on Earth in under two hours.

Variant #2: A proposed new style of aircraft, according to its proponents, could fly between most points on Earth in under two hours by skimming along the top of the atmosphere.

Variant #3: By skimming along the top of the atmosphere, a proposed new style of aircraft, according to its proponents, could fly between most points on Earth in under two hours.

I hope this exercise illustrates that it is important to consider the nature of the modifier before you make a determination as to what it, or the sentence as a whole, means to convey. Thank you for thinking to ask me about this one.

- Andrew
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By skimming along the top of the atmosphere a proposed new style of a 04 Apr 2021, 12:20
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How can A be correct? It is not the proposed new style of aircraft that is skimming along the top of the atmosphere, but rather it is the aircraft itself. Can you please explain your thought process?
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By skimming along the top of the atmosphere a proposed new style of a 16 Apr 2021, 06:40
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Hi AjiteshArun AndrewN GMATRockstar BrightOutlookJenn

Quote:
D) A proposed new style of aircraft, say its proponents, could fly between most points on Earth in under two hours because of its skimming along the top of the atmosphere.
Show more

A general query on because <preposition> <noun> <verb+ing>
Is this type of construction usually wrong in GMAT?

Example:
1. Because of Ram joining the match … --> WRONG?
2. Because of Sam winning a high score … --> WRONG?


I learnt it from here

Similar construction is in this question because of +ing

please share your thoughts AjiteshArun AndrewN GMATRockstar BrightOutlookJenn
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By skimming along the top of the atmosphere a proposed new style of a 16 Apr 2021, 13:58
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mSKR
Hi AjiteshArun AndrewN GMATRockstar BrightOutlookJenn

Quote:
D) A proposed new style of aircraft, say its proponents, could fly between most points on Earth in under two hours because of its skimming along the top of the atmosphere.

A general query on because <preposition> <noun> <verb+ing>
Is this type of construction usually wrong in GMAT?

Example:
1. Because of Ram joining the match … --> WRONG?
2. Because of Sam winning a high score … --> WRONG?


I learnt it from here

Similar construction is in this question because of +ing

please share your thoughts AjiteshArun AndrewN GMATRockstar BrightOutlookJenn
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Hello, mSKR. Yes, I would disfavor the because of + -ing construct. Either of the two sentences you wrote above could be improved by converting the prepositional phrase into a verb instead:

1. Because Ram joined the match...

2. Because Sam [earned?] a high score...

The new sentences are much easier to follow, perfectly in keeping with a preferred answer on the GMAT™.

I hope that helps with your query. Thank you for thinking to ask.

- Andrew
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By skimming along the top of the atmosphere a proposed new style of a 16 Apr 2021, 14:17
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Hi mSKR

Thanks for the tag. You asked

Quote:
A general query on because <preposition> <noun> <verb+ing>
Is this type of construction usually wrong in GMAT?

Example:
1. Because of Ram joining the match … --> WRONG?
2. Because of Sam winning a high score … --> WRONG?
Show more

Here's how I would think about this. "Because of" needs to be followed by a noun. If the idea we are trying to express is actually more complicated than just a noun, don't use "because of" (or "due to"). Instead, switch to "because" (without "of") or a different construction that allows us to have a real subject and real verb.

Example:
1. Prices have increased because of inflation. => Fine: "inflation" is just a noun
2. Prices have increased because of Congress' passing a law requiring businesses to assume liability for customer injuries. =>OMG, no! Dead on arrival. Someone actually DID SOMETHING so let's get a real conjugated verb to express the action.

2: New and improved: Prices have increased because Congress passed a law requiring businesses to assume liability for customer injuries.

3. Because of executives believing that layoffs save money, personnel reduction was the most popular choice in a recent survey of cost-cutting measures in Fortune 500 companies.
=> Yikes. "Because of executives believing"?? Oh dear. Let's cut the crap and get a real verb:

3: New and improved: Because executives believe that layoffs save money, ...

Does this help? Let us know!
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By skimming along the top of the atmosphere a proposed new style of a 16 Apr 2021, 20:33
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mSKR
A general query on because <preposition> <noun> <verb+ing>
Is this type of construction usually wrong in GMAT?

Example:
1. Because of Ram joining the match … --> WRONG?
2. Because of Sam winning a high score … --> WRONG?
Show more
Hi mSKR,

To add to the responses you've already received: try not to think of because of as "because + preposition". That is, don't look at it as a combination of because (a conjunction) and of (a preposition). Instead, consider because of (the whole thing) as a (multi-word) preposition, different from because.
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By skimming along the top of the atmosphere a proposed new style of a 26 Apr 2021, 11:24
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shenwenlim
GMATNinja

How can A be correct? It is not the proposed new style of aircraft that is skimming along the top of the atmosphere, but rather it is the aircraft itself. Can you please explain your thought process?
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Notice that in every answer choice, we have the verb "could fly" paired up with the subject "a proposed new style of aircraft" (in choice B, the pronoun "it" refers to "a proposed new style of aircraft"). "Style" is the main subject, and the rest of the phrase ("a proposed new" and "of aircraft") modifies that subject.

In EVERY answer choice, it's not the aircraft that could fly -- instead, it's technically the style (of aircraft). And since it's the style that's technically doing the flying, it makes sense that the style is also doing the skimming.

This sort of thing comes up all the time when we are talking about the type of something. For example:

    "A new type of rubber can withstand temperatures of up to 400 degrees Fahrenheit." - Yes, we are talking about rubber, but "type" is technically the subject and thus the thing that can withstand the temperatures.

It's the same with "a style of [X]..." - The "style" is technically the subject, and it's the thing doing whatever action follows.

I hope that helps!
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By skimming along the top of the atmosphere a proposed new style of a 03 May 2021, 14:30
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Hey, someone said english is an end-weighted language. Thats why I chose E. According to its proponents needs to be first. Bad, bad, bad sentence.

Posted from my mobile device
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By skimming along the top of the atmosphere a proposed new style of a 20 Jun 2021, 15:24
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AndrewN can u give your analysis for why option D & E incorrect
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By skimming along the top of the atmosphere a proposed new style of a 03 Aug 2021, 19:28
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How can we make sure that it's not the "Proponents" that is being modified by the modifier starting with "Skimming"?
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[quote="generis"]By skimming along the top of the atmosphere, a proposed new style of aircraft could fly between most points on Earth in under two hours, according to its proponents.

A) By skimming along the top of the atmosphere, a proposed new style of aircraft could fly between most points on Earth in under two hours, according to its proponents.

B) By skimming along the top of the atmosphere, proponents of a proposed new style of aircraft say it could fly between most points on Earth in under two hours.

C) A proposed new style of aircraft could fly between most points on Earth in under two hours, according to its proponents, with it skimming along the top of the atmosphere.

D) A proposed new style of aircraft, say its proponents, could fly between most points on Earth in under two hours because of its skimming along the top of the atmosphere.

E) According to its proponents, skimming along the top of the atmosphere makes it possible that a proposed new style of aircraft could fly between most points on Earth in under two hours.

CHOICE C
"with it skimming..." should be touch the main clause so that this phrase can show a circumstance of the main action/verb. "acoording to its proponent" should be placed outside. this is at least inferior. "it" in "it skimming" is good because "its" in "its proponent" is good.
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By skimming along the top of the atmosphere a proposed new style of a 01 Sep 2021, 10:45
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NareshGargMBA
How can we make sure that it's not the "Proponents" that is being modified by the modifier starting with "Skimming"?
Show more
When analyzing modifiers, ask yourself two questions:

    1) Given the structure of the answer choice, what is being modified?
    2) Does it actually make sense to modify that thing in that way?

When -ing modifiers appear at the beginning of a sentence, it modifies the clause that follows. Specifically, it has to work with the subject of that clause (for more on -ing words, check out this article).

With that in mind, take a look at answer choice (B):
Quote:
B) By skimming along the top of the atmosphere, proponents of a proposed new style of aircraft say it could fly between most points on Earth in under two hours.
Show more
Let's start with question #1: given the structure of the answer choice, what is being modified? The way that this sentence is structured, the "proponents" are being modified by the -ing modifier at the beginning of the sentence.

Now, here's question #2: does it actually make sense to modify that thing in that way?

A "proponent" of a certain style of aircraft must be a human being -- nothing else would be arguing for or against a certain kind of aircraft. So, can a human being skim along the top of the atmosphere, as implied by that opening modifier?

Definitely not. The GMAT is quite literal about the meaning of SC sentences, and it makes no sense for a person to be skimming along the top of the atmosphere.

(B) is out because the modifier doesn't make any sense.

Here's (A) again:
Quote:
A) By skimming along the top of the atmosphere, a proposed new style of aircraft could fly between most points on Earth in under two hours, according to its proponents.
Show more
This makes way more sense -- "a proposed new style of aircraft" is the thing that is "skimming along the top of the atmosphere."

I hope that helps!
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By skimming along the top of the atmosphere a proposed new style of a 10 Sep 2021, 04:32
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abhishekmayank


@abhishekmayank I am little confused on this assertion that first use of 'its' is correct, but second use of 'its' is ambiguous in option D. Should not the repeated pronoun 'its' be referring to the same antecedent ?

You are correct that the same pronoun must refer to the same antecedent. The ambiguity of the pronoun is debatable, but the larger issue is the construction itself -- how can we create the most clear and concise intended meaning? (Note: when in doubt, the correct answer is more likely to include fewer pronouns).

Using "By" clearly and concisely gives the intended meaning of "How". To give a couple simple examples:

By running, Joe arrived quickly.
Joe arrived quickly because of his running.

Or, as MentorTutoring explained very well above:

"because of its skimming"
 would be much better if changed to:
"because it could skim".

The green examples above are better because they clearly communicate the action of "How", as opposed to the nouns "his running" or "its skimming".

A similar concept is Active Voice vs. Passive Voice. (Note: Active is vastly preferred, but occasionally there are correct choices that include Passive Voice, when the other choices have clear grammatical errors) For example:

Joe decided to play.
The decision to play was made by Joe.

Another new question from OG2021 can be done more efficiently when you recognize this Active vs. Passive concept: https://gmatclub.com/forum/although-the ... l#p2501176

Does this make sense? Please tag me if you have further questions, thanks.
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GMATCoachBen Please could you tell why option C is incorrect? I see "with modifier" is used as an action modifier and it aptly tells how in option C it the action "fly" is getting modified
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By skimming along the top of the atmosphere a proposed new style of a 03 Apr 2022, 09:36
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Hello Experts,

Whats wrong with D and E?
just eliminated them because of poor construction!
Is D wrong beacause "say its proponents" is enclosed within commas? (verb is closed and has no subject)
Whats the exact reason?

What about E
I don't see any pronoun issue "it's" can take logical antecedent-aircraft.
Is there any vital rule that 2 pronouns can't have 1 antecedent?
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By skimming along the top of the atmosphere a proposed new style of a 03 Apr 2022, 10:59
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dcoolguy
Hello Experts,

Whats wrong with D and E?
just eliminated them because of poor construction!
Is D wrong beacause "say its proponents" is enclosed within commas? (verb is closed and has no subject)
Whats the exact reason?
Show more
In (D), the subject of "say" is "proponents." So, the structure and use of that parenthetical clause are fine.

The biggest issue in (D) is that there is a poor connection between the aircraft's "skimming" and the fact that the aircraft "could fly between most points on Earth in under two hours."

Notice that (D) does not make clear that the aircraft would "fly between most points on Earth in under two hours" by "skimming." Rather, it makes the less clear point that, somehow, "because of its skimming," the aircraft "would fly between most points on Earth in under two hours" without clearly connecting the skimming to the rapidity of the flying.

Also, notice the use of "could" in (D), which magnifies the meaning issue. Because (D) uses "could" it communicates that "because of its skimming," the aircraft "could," or may possibly "fly between most points on Earth in under two hours." So, the skimming somehow causes a possibility.

Quote:
What about E
I don't see any pronoun issue "it's" can take logical antecedent-aircraft.
Is there any vital rule that 2 pronouns can't have 1 antecedent?
Show more
The use of "its" in (E) is not ideal. Though we can tell what the sentence is meant to communicate, since "skimming" closely follows "its" and "aircraft" is far from "its," the sentence seems to be saying "According to (skimming's) proponents.

At the same time, an even more significant issue with (E) is that it communicates that "skimming along the top of the atmosphere" makes a fact possible.

Notice that (E) does not say that the "skimming" is done by the "proposed new style of aircraft." Rather it seems to convey that skimming in general makes possible the fact "that a proposed new style of aircraft could fly between most points on Earth in under two hours."

So, the meaning conveyed by (E) is ridiculous.
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By skimming along the top of the atmosphere a proposed new style of a 05 Apr 2022, 09:15
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kittle
GMATCoachBen
abhishekmayank


@abhishekmayank I am little confused on this assertion that first use of 'its' is correct, but second use of 'its' is ambiguous in option D. Should not the repeated pronoun 'its' be referring to the same antecedent ?

You are correct that the same pronoun must refer to the same antecedent. The ambiguity of the pronoun is debatable, but the larger issue is the construction itself -- how can we create the most clear and concise intended meaning? (Note: when in doubt, the correct answer is more likely to include fewer pronouns).

Using "By" clearly and concisely gives the intended meaning of "How". To give a couple simple examples:

By running, Joe arrived quickly.
Joe arrived quickly because of his running.

Or, as MentorTutoring explained very well above:

"because of its skimming"
 would be much better if changed to:
"because it could skim".

The green examples above are better because they clearly communicate the action of "How", as opposed to the nouns "his running" or "its skimming".

A similar concept is Active Voice vs. Passive Voice. (Note: Active is vastly preferred, but occasionally there are correct choices that include Passive Voice, when the other choices have clear grammatical errors) For example:

Joe decided to play.
The decision to play was made by Joe.

Another new question from OG2021 can be done more efficiently when you recognize this Active vs. Passive concept: https://gmatclub.com/forum/although-the ... l#p2501176

Does this make sense? Please tag me if you have further questions, thanks.



GMATCoachBen Please could you tell why option C is incorrect? I see "with modifier" is used as an action modifier and it aptly tells how in option C it the action "fly" is getting modified
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You are right when you say "with modifier" is used as an action modifier, but option (A) here is better. Why? Because, A conveys the intended meaning more precisely here. The intended meaning (As conveyed by the all the other answer choices, almost) is, proponents say that the new Aircraft could fly by skimming over the atmosphere. Here, this connection between the flying and skimming is crucial and better conveyed by the usage of "by skimming". You should check AndrewN 's explanation above that mentions this exact point.
It's fine to use "with + noun + participle" if you want to paint the action happening in the preceding clause. And as you rightly pointed out, it could well be justified here. But, the meaning gets distorted. By placing the skimming the atmosphere part in "with modifier", we take away that connection between "flying and skimming" that the proponents want to establish.
You use "with modifier" is these cases: 1. Tourists saw the lion resting in his den, with their eyes wide open. 2. The king entered the palace hall, with the cries of joy filling the court house.
AndrewN would you kindly share your two cents on the correct usage of "with + noun + participle" or "with modifier" ?
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By skimming along the top of the atmosphere a proposed new style of a 05 Apr 2022, 14:01
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You are right when you say "with modifier" is used as an action modifier, but option (A) here is better. Why? Because, A conveys the intended meaning more precisely here. The intended meaning (As conveyed by the all the other answer choices, almost) is, proponents say that the new Aircraft could fly by skimming over the atmosphere. Here, this connection between the flying and skimming is crucial and better conveyed by the usage of "by skimming". You should check AndrewN 's explanation above that mentions this exact point.
It's fine to use "with + noun + participle" if you want to paint the action happening in the preceding clause. And as you rightly pointed out, it could well be justified here. But, the meaning gets distorted. By placing the skimming the atmosphere part in "with modifier", we take away that connection between "flying and skimming" that the proponents want to establish.
You use "with modifier" is these cases: 1. Tourists saw the lion resting in his den, with their eyes wide open. 2. The king entered the palace hall, with the cries of joy filling the court house.
AndrewN would you kindly share your two cents on the correct usage of "with + noun + participle" or "with modifier" ?
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A fine writeup on the with phrase, MissBong. I will confess that in my own approach to SC questions, believe it or not, I aim not to tell a with phrase what it needs to do. I simply look to contextual clues to assess whether a given option can fall by the wayside for any reason. And, to ensure that I grasp how such a phrase may function correctly, I take note of official questions in which the construct appears in the correct answer. I will spoil just a few from different editions of the OG, but take a look at the following four questions and learn what you can from them, regarding with:

1) In a speech before the Senate Banking Committee...

2) Starfish, with anywhere from five to eight arms...

3) The tourism commission has conducted surveys...

4) Visitors to the park have often looked up...

Happy solving. Thank you for bringing me back into the dialogue here.

- Andrew
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