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555-605 Level|   Grammatical/Rhetorical Construction|   Meaning/Logical Predication|   Modifiers|   Modifiers|   Punctuation|                                          
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city92
The World Wildlife Fund has declared that global warming, a phenomenon most scientists agree to be caused by human beings in burning fossil fuels, will create havoc among migratory birds by altering the environment in ways harmful to their habitats.


(A) a phenomenon most scientists agree to be caused by human beings in burning fossil fuels,
(B) a phenomenon most scientists agree that is caused by fossil fuels burned by human beings,
(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,
(D) which most scientists agree on as a phenomenon caused by human beings who burn fossil fuels,
(E) which most scientists agree to be a phenomenon caused by fossil fuels burned by human beings,


GMATNinja
Good Morning!
In option D or rather any option which uses "human beings", Can we say that "their" at the end of the sentence causes ambiguity? Or the "their" at the end of the sentence refers to "migratory birds" only.

Thank you!
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city92
The World Wildlife Fund has declared that global warming, a phenomenon most scientists agree to be caused by human beings in burning fossil fuels, will create havoc among migratory birds by altering the environment in ways harmful to their habitats.


(A) a phenomenon most scientists agree to be caused by human beings in burning fossil fuels,
(B) a phenomenon most scientists agree that is caused by fossil fuels burned by human beings,
(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,
(D) which most scientists agree on as a phenomenon caused by human beings who burn fossil fuels,
(E) which most scientists agree to be a phenomenon caused by fossil fuels burned by human beings,


GMATNinja
Good Morning!
In option D or rather any option which uses "human beings", Can we say that "their" at the end of the sentence causes ambiguity? Or the "their" at the end of the sentence refers to "migratory birds" only.

Thank you!
Remember, you want to try to avoid eliminating answer choices based on ambiguous pronouns (more on that in this video). That's especially true here, since you could make that argument for every option!

The best reason to kill (D) is that it seems to imply that global warming is caused by the people who burn fossil fuels, as opposed to the burning of the fossil fuels themselves. Put another way, (D) suggests the possibility that the people who burn fossil fuels might be up to some other nefarious activities that are causing warming -- and the fact that they burn fossil fuels is just an unrelated, identifying trait -- whereas (C) makes it crystal-clear that the burning of the fuels is the culprit.

Takeaway: Don't eliminate an answer choice because it contains an ambiguous pronoun when you can eliminate that same option because it's less clear or logical than its competitors.

I hope that helps!
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Hello Experts,
GMATNinja, GMATGuruNY, AjiteshArun,

So, it seems that correct choice C is run-on!
Can you share your thought, please?
The World Wildlife Fund has declared that global warming, a phenomenon most scientists agree to be caused by human beings in burning fossil fuels, will create havoc among migratory birds by altering the environment in ways harmful to their habitats.

(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,

In C, we get two independent clause!

1/ global warming will create havoc among migratory birds by altering the environment in ways harmful to their habitats.
2/ a phenomenon is caused by human beings' burning of fossil fuels.

number 2/ is something like :
x is beaten by y.
So, why not C run-on?
Thanks__
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Asad
Hello Experts,
GMATNinja, GMATGuruNY, AjiteshArun,

So, it seems that correct choice C is run-on!
Can you share your thought, please?
The World Wildlife Fund has declared that global warming, a phenomenon most scientists agree to be caused by human beings in burning fossil fuels, will create havoc among migratory birds by altering the environment in ways harmful to their habitats.

(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,

In C, we get two independent clause!

1/ global warming will create havoc among migratory birds by altering the environment in ways harmful to their habitats.
2/ a phenomenon is caused by human beings' burning of fossil fuels.

number 2/ is something like :
x is beaten by y.
So, why not C run-on?
Thanks__
Hi Asad,

"A phenomenon that most scientists agree is caused by human beings' burning of fossil fuels" is not an independent clause. It is a noun phrase. The problem, I think, is that most scientists agree in there. We should ignore it.

A phenomenon that most scientists agree is caused by human beings' burning of fossil fuels
can be read as
A phenomenon that most scientists agree is caused by human beings' burning of fossil fuels
or
A phenomenon that is caused by human beings' burning of fossil fuels

The reason we ignore that part of the sentence is that most scientists agree tells us more about is caused by than about the phenomenon itself. That is, most scientists do not "agree" the phenomenon itself. They agree that it is caused by human beings' burning of fossil fuels.
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Quote:
World Wildlife Fund has declared that global warming, a phenomenon most scientists agree to be caused by human beings in burning fossil fuels, will create havoc among migratory birds by altering the environment in ways harmful to their habitats.

(A) a phenomenon most scientists agree to be caused by human beings in burning fossil fuels,
(B) a phenomenon most scientists agree that is caused by fossil fuels burned by human beings,
(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,
(D) which most scientists agree on as a phenomenon caused by human beings who burn fossil fuels,
(E) which most scientists agree to be a phenomenon caused by fossil fuels burned by human beings,

Hi honorable experts,
Request Expert Reply:
MartyTargetTestPrep, GMATNinja, GMATGuruNY, VeritasPrepHailey, BrightOutlookJenn, AjiteshArun
Q1:
Can we cross out choice D and E because two subjects (i.e., 1/ 'global warming (which)' and 2/'most scientists') sit site by site and there just have one verb (agree) for these 2 subjects?

Q2:
There is no options where human beings is introduced other than choice D. So, introducing 'human-beings' separately is an 'issue', right?
D says:
(D) which most scientists agree on as a phenomenon caused by human beings who burn fossil fuels,
Here, the underlined part is 'non-restrictive'. So, if we remove this underlined part, it'll not make any problem to the meaning. If this is the case, someone may write choice D as:
(D) which most scientists agree on as a phenomenon caused by human beings who burn CIGARETTE/CLOTHS/LARGE SHIP/HOME/LARGE BRIDGE, :)
So, can we strike out choice D with this thinking?
Appreciating your help, experts.
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Hi, GMATGuruNY

While going through other forums, I have encountered your explanation:

In C, its paying doctors is incorrect.
POSSESSIVE + GERUND + DIRECT OBJECT is not a viable construction on the GMAT.
Eliminate C.


here is the link: https://gmatclub.com/forum/?href=-sc-question-t124837.html

you said that POSSESSIVE + GERUND + DIRECT OBJECT is not a viable construction on the GMAT.

But, in the correct answer (C), there is such construction.

(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,

Could you please explain why that construction is correct now?

Thank you very much beforehand!
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Ilhomjon98
Hi, GMATGuruNY

While going through other forums, I have encountered your explanation:

In C, its paying doctors is incorrect.
POSSESSIVE + GERUND + DIRECT OBJECT is not a viable construction on the GMAT.
Eliminate C.


here is the link: https://gmatclub.com/forum/?href=-sc-question-t124837.html

you said that POSSESSIVE + GERUND + DIRECT OBJECT is not a viable construction on the GMAT.

But, in the correct answer (C), there is such construction.

(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,

Could you please explain why that construction is correct now?

Thank you very much beforehand!

The statement in red is incorrect.
A prepositional phrase is a MODIFIER.
In C, the prepositional phrase in blue is not a direct object but a modifier.
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TheUltimateWinner
Quote:
World Wildlife Fund has declared that global warming, a phenomenon most scientists agree to be caused by human beings in burning fossil fuels, will create havoc among migratory birds by altering the environment in ways harmful to their habitats.

(A) a phenomenon most scientists agree to be caused by human beings in burning fossil fuels,
(B) a phenomenon most scientists agree that is caused by fossil fuels burned by human beings,
(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,
(D) which most scientists agree on as a phenomenon caused by human beings who burn fossil fuels,
(E) which most scientists agree to be a phenomenon caused by fossil fuels burned by human beings,

Hi honorable experts,
Request Expert Reply:
MartyTargetTestPrep, GMATNinja, GMATGuruNY, VeritasPrepHailey, BrightOutlookJenn, AjiteshArun
Q1:
Can we cross out choice D and E because two subjects (i.e., 1/ 'global warming (which)' and 2/'most scientists') sit site by site and there just have one verb (agree) for these 2 subjects?
...
Within the "which..." clause, the subject is "most scientists," and the verb for that subject is "agree."

We can remove the "which..." clause for a moment to analyze the "that..." clause:

    "The World Wildlife Fund has declared that global warming will create havoc among migratory birds by altering the environment in ways harmful to their habitats."

Within the "that..." clause, the subject is "global warming," and the verb for that subject is "will create." So each of these two subjects actually has its own verb, and we cannot eliminate (D) and (E) for that reason.

TheUltimateWinner
...
Q2:
There is no options where human beings is introduced other than choice D. So, introducing 'human-beings' separately is an 'issue', right?
D says:
(D) which most scientists agree on as a phenomenon caused by human beings who burn fossil fuels,
Here, the underlined part is 'non-restrictive'. So, if we remove this underlined part, it'll not make any problem to the meaning. If this is the case, someone may write choice D as:
(D) which most scientists agree on as a phenomenon caused by human beings who burn CIGARETTE/CLOTHS/LARGE SHIP/HOME/LARGE BRIDGE, :)
So, can we strike out choice D with this thinking?
Appreciating your help, experts.
That sounds about right. By using "who burn fossil fuel" to modify "human beings," (D) seems to indicate that global warming is caused by human beings who happen to burn fossil fuels, when in fact it's the act of burning fossil fuels that causes global warming (as explained in this post).

The logical meaning is more clear in choice (C), so that's our winner.
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The World Wildlife Fund has declared that global warming, a phenomenon most scientists agree to be caused by human beings in burning fossil fuels, will create havoc among migratory birds by altering the environment in ways harmful to their habitats.

(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,

GMATNinja Can you please explain C from meaning point of view
It sounds to me - a phenomenon that most scientists agree is caused by (Something of Human beings) burning of fossil fuels and not not an action by human beings.
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sudeshpatodiya
The World Wildlife Fund has declared that global warming, a phenomenon most scientists agree to be caused by human beings in burning fossil fuels, will create havoc among migratory birds by altering the environment in ways harmful to their habitats.

(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,

GMATNinja Can you please explain C from meaning point of view
It sounds to me - a phenomenon that most scientists agree is caused by (Something of Human beings) burning of fossil fuels and not not an action by human beings.
It might be helpful to think about it like this: if you see the construction "caused by," afterwards, you're going to need a non-possessive noun that's serving as the cause. For example:

    Upon closer inspection, it was clear that the damage in the garden was caused by Tim's pet gophers.

Here, the gophers are the thing causing the damage. You can think of the possessive "Tim's" as a modifier giving us a little more information about those gophers, but it's the animals that are acting here. (It's hard to properly train gophers. :dontknow: )

Now consider the relevant portion of (C) without the possessive:

Quote:
A phenomenon that most scientists agree is caused by [the] burning of fossil fuels
What's the thing causing the phenomenon? It's the the burning of fossil fuels. "Burning" here functions as a noun. Pretty clear.

If we reinsert the possessive to make the phrase "human being's burning of fossil fuels," we now have more information about the "burning": humans are the culprits, rather than some other animal. Because the fundamental meaning of the sentence -- that the act of burning of fossil fuels is causing a phenomenon -- remains the same, this construction is perfectly logical.

I hope that clarifies things a bit!
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(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,

(C) a phenomenon that , most scientists agree , is caused by human beings' burning of fossil fuels,

Hi Dear experts AndrewN AjiteshArun

I learned with SC that GMAT SC loves simplicy and unmabiguity.

As many students have raised this point that C could be interpreted as:
(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,
or
(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,


It is true that in most of our structure any context after that usually modifies noun before that. - one of the usage of that

please share your comments on such a construction.

I understood C is correct . I am trying to learn from it to avoid such similar msitake.
Your comments/suggestions be appreciable.

thanks AndrewN AjiteshArun
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mSKR
(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,

(C) a phenomenon that , most scientists agree , is caused by human beings' burning of fossil fuels,

Hi Dear experts AndrewN AjiteshArun

I learned with SC that GMAT SC loves simplicy and unmabiguity.

As many students have raised this point that C could be interpreted as:
(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,
or
(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,


It is true that in most of our structure any context after that usually modifies noun before that. - one of the usage of that

please share your comments on such a construction.

I understood C is correct . I am trying to learn from it to avoid such similar msitake.
Your comments/suggestions be appreciable.

thanks AndrewN AjiteshArun
I will be honest, mSKR, and say that I have no idea what this distinction is in red and green above. The context of the sentence should make it clear that a phenomenon is caused by... would make no sense—a detached independent clause would then be interrupting the main clause in a nonsensical manner—so what is the issue with accepting the latter? It is similar to saying, Critics are saying that the new film, a blockbuster that my friend thinks is absolute rubbish, is the best action picture of the year. The appositive phrase simply contains additional information within the embedded (relative) clause. Is the blockbuster absolute rubbish? Not necessarily. The sentence only conveys that my friend thinks so, and such a construct is a valid way to bypass something stuffier such as according to my friend. I would not worry too much about the unfamiliar construct. It is unlikely to pop up more than once in several thousand questions.

Thank you for thinking to ask.

- Andrew
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mSKR
(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,

(C) a phenomenon that , most scientists agree , is caused by human beings' burning of fossil fuels,

Hi Dear experts AndrewN AjiteshArun

I learned with SC that GMAT SC loves simplicy and unmabiguity.

As many students have raised this point that C could be interpreted as:
(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,
or
(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,


It is true that in most of our structure any context after that usually modifies noun before that. - one of the usage of that

please share your comments on such a construction.

I understood C is correct . I am trying to learn from it to avoid such similar msitake.
Your comments/suggestions be appreciable.

thanks AndrewN AjiteshArun
Hi mSKR,

To add to AndrewN's response, I usually ask my students to think about similar structures after a relative as an "according to..." phrase.

1. ... a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels...
is somewhat like
2. ... a phenomenon that, according to most scientists, is caused by human beings' burning of fossil fuels...

Of course, the more accurate (and better) way to look at that structure is like this:
3. ... a phenomenon that (most scientists agree) is caused by human beings' burning of fossil fuels...

You may also want to take a look at this post.
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city92
The World Wildlife Fund has declared that global warming, a phenomenon most scientists agree to be caused by human beings in burning fossil fuels, will create havoc among migratory birds by altering the environment in ways harmful to their habitats.


(A) a phenomenon most scientists agree to be caused by human beings in burning fossil fuels,
The final addition of 'in' the end of sentence distorts the meaning intending as though burning of fossil fuel mis the real reason for global warming

(B) a phenomenon most scientists agree that is caused by fossil fuels burned by human beings,
the inclusion of that in the sentence is absolutely uncessary distorts the entire meaning

(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,
This nails the meaning and iron out all the flaws let us hang on to it

(D) which most scientists agree on as a phenomenon caused by human beings who burn fossil fuels,
which and as a is not required which makes it akward and unnecessay moreover distorts the meaning

(E) which most scientists agree to be a phenomenon caused by fossil fuels burned by human beings,
Similar reasoning as D
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city92
The World Wildlife Fund has declared that global warming, a phenomenon most scientists agree to be caused by human beings in burning fossil fuels, will create havoc among migratory birds by altering the environment in ways harmful to their habitats.


(A) a phenomenon most scientists agree to be caused by human beings in burning fossil fuels,

(B) a phenomenon most scientists agree that is caused by fossil fuels burned by human beings,

(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,

(D) which most scientists agree on as a phenomenon caused by human beings who burn fossil fuels,

(E) which most scientists agree to be a phenomenon caused by fossil fuels burned by human beings,



Attachment:
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0002.jpg
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0003.jpg
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Hi, though I got the right answer, I see that in C a possessive form is used, and I am not sure if it makes sense here. I mean its literally saying burning of fossil fuels of human beings. can you please explain how is it correct? Also, in D is there a concrete reason o eliminate. I thought it was very indirectly conveying the intended meaning. AndrewN IanStewart
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city92
The World Wildlife Fund has declared that global warming, a phenomenon most scientists agree to be caused by human beings in burning fossil fuels, will create havoc among migratory birds by altering the environment in ways harmful to their habitats.


(A) a phenomenon most scientists agree to be caused by human beings in burning fossil fuels,

(B) a phenomenon most scientists agree that is caused by fossil fuels burned by human beings,

(C) a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels,

(D) which most scientists agree on as a phenomenon caused by human beings who burn fossil fuels,

(E) which most scientists agree to be a phenomenon caused by fossil fuels burned by human beings,



Attachment:
0001.jpg
Attachment:
0002.jpg
Attachment:
0003.jpg
Attachment:
0004.jpg
Attachment:
0005.jpg

Hi, though I got the right answer, I see that in C a possessive form is used, and I am not sure if it makes sense here. I mean its literally saying burning of fossil fuels of human beings. can you please explain how is it correct? Also, in D is there a concrete reason o eliminate. I thought it was very indirectly conveying the intended meaning. AndrewN IanStewart
Hello, pk6969. I like the to-the-point response on (D) that GMATNinja provided above, here. Regarding your interpretation of (C), I think the preposition ahead of human beings should be by instead of of: the burning of fossil fuels by human beings. This is little different from thinking of the possessive Shakespeare's works as those by Shakespeare. Possessives need not be thought of in a single manner.

Thank you for thinking to ask.

- Andrew
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Is there any good gmat educational ressources on possessive. I am often confused whether its use is correct.

For me, using possessive was correct when an element owned an other element. Ex: This is Paul's house.
But, apparently you can use the possessive in other situations such as here, why?

Thanks


BKimball
tonebeeze,

I'd take two lessons from this problem.

1. The plural possessive. C refers to the entire collection of human beings and their burning of fossil fuels, so you need to use the plural possessive. Consider some other examples:

"My three brothers' favorite game growing up was making fun of me." --> Here, the game belongs to all three of my brothers.
"Will you please go to the Smiths' house and ask for a cup of sugar?" --> Here, the house belongs to all of the Smiths, so you need that plural possessive.

2. "Sounds awkward" is less reliable then "is grammatically incorrect."

I agree that C) is written in a way that is not ordinary in everyday speech, but when I'm reading and I notice that, I make only a mental note that it might be wrong. I then go to E) and see the incorrect idiom "agree to be" and then unnecessarily passive tense. The problems with E are therefore worse than the "problems" with C even though C isn't the best sentence in the world.

Does that help?

Brett
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