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A team of researchers reported that five endangered birds species had

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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 20 Jul 2019, 14:25
GMATNinja

Can you please explain why D is correct? Why I eliminated D was because of the parallelism error. Is this an exception?
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 21 Jul 2019, 10:05
if we see a split between the same tense and changed tense in parallel pattern, find a reason for changing tense. in this question, logic is a reason for changing tense. for most of questions on official sources, there is no reason for changing tense and the choice with changed tense is wrong
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 28 Jul 2019, 09:37
Hi there, could you kindly explain why is it D and Why not C, C can be parallel too, nesting or investigating, but it is very confusing. Could you break down the entire question and solve my query after doing so?
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 28 Jul 2019, 21:50
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aakash214 wrote:
GMATNinja

Can you please explain why D is correct? Why I eliminated D was because of the parallelism error. Is this an exception?
It'd help if you could let us know how you read this sentence.

A team of researchers reported that five endangered birds species had resumed nesting or were investigating nesting boxes erected by volunteers ferried out to the island last month.

The two verbs here (had resumed and were investigating) are parallel. Ignore erected by (modifier for nesting boxes) and ferried (modifier for volunteers). Also, don't try to apply "tense parallelism". Verbs may or may not have the same tense. It's a meaning call, and the meaning here is that there were two types of birds (bird species): (a) ones that had already resumed nesting and (b) ones that were investigating the nesting boxes left by volunteers.
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 01 Jun 2020, 06:23
Dear GMATGuruNY,

Why is C. wrong?

A team of researchers reported that five endangered birds species had resumed nesting or investigating nesting boxes, erected by volunteers, ferried out to the island last month.

Q1. Why can't the birds resume "investigating"?

Q2. According to https://www.beatthegmat.com/a-team-of-r ... 93216.html,
Quote:
Parallel forms should serve the SAME FUNCTION.
C: nesting boxes, erected by volunteers, ferried out to the island
Here, COMMA + erected and COMMA + ferried are parallel forms.
As a result, both modifiers seem to refer to nesting boxes, implying that NESTING BOXES were FERRIED OUT to the island.
The intended meaning is that VOLUNTEERS were ferried out to the island.
Eliminate C.


Why is it necessary that volunteers have to build boxes on the island?
Isn't it equally logical that volunteers build those boxes on MAINLAND and then ship them to island?

As an analogy, we build Tesla in the US and then ship it around the world.
Is it necessary that Tesla has to be built locally?
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 01 Jun 2020, 18:10
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varotkorn:

Why is C. wrong?
Q1. Why can't the birds resume "investigating"? They could...in a different question.
Q2. Why is it necessary that volunteers have to build boxes on the island?
Isn't it equally logical that volunteers build those boxes on MAINLAND and then ship them to island? Honestly, I don't think this has anything to do with the question, personally.


"C" is wrong because it is not a BETTER GMAT sentence than the correct answer, D. It's as simple as that. Why do you think C is BETTER than D? Why is D grammatically incorrect?

Sometimes I think instead of asking, "Why is it not C?" the better question is, "by what mistaken criteria do you assume C is the answer the GMAT wants you to choose over D?"

These answer choices do not exist independely in a vaccum. They are intertwined with one another, sharing certain words and phrases, offering slightly different words and phrases. So our job is always to take each group of a five as a whole and then understand what the GMAT is testing by making the changes they make between the five.

So let's say I was very confident that it was either C or D:

(C) A team of researchers reported that five endangered birds species had resumed nesting or investigating nesting boxes, erected by volunteers, ferried out to the island last month.

(D) A team of researchers reported that five endangered birds species had resumed nesting or were investigating nesting boxes erected by volunteers ferried out to the island last month.

Let's list the differences between them:

(C) "investigated" parallel with "nesting"
(D) "were investigating" is not parallel, is a separate action

(C) "erected by volunteers" is a non-essential modifier set aside with commas, so "ferried out to the island" is modifying "nesting boxes"
(D) "erected by volunteers" does not have commas, so it is NOT set aside with commas, so "ferried out to the island" is modifying "volunteers"

In the first difference, you might assume (C) is automatically correct because it is parallel and that is usually the case on Easy/Medium SC questions. But this is a 700+ level question, so don't get complacent. Just because it is parallel, doesn't mean it has the most logical meaning!

(C)'s meaning is that the bird species HAD resumed nesting OR HAD resumed investigating the boxes BEFORE the simple past tense action of "reported." So the meaning is that this action is complete. The birds are not currently investigating the boxes.

(D)'s meaning is that they HAD resumed nesting prior to the action of "reported," OR, completely separately, the birds WERE (in the process of) investigating the boxes. So they had either completed their resumption of nesting, or they were in the process of investigating. This makes a LOT of sense with the conjunction "or"!! Either they DID it, OR they were thinking about doing it. :)

When it comes to the modifier difference, we don't need commas to set aside "erected by volunteers." It's not necessary, and it's just more clear to say the volunteers were the ones being ferried. Not the boxes.
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 03 Jun 2020, 02:40
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varotkorn wrote:
Why is it necessary that volunteers have to build boxes on the island?
Isn't it equally logical that volunteers build those boxes on MAINLAND and then ship them to island?


The SC above states not that the nesting boxes were built but that they were ERECTED.
To erect X = to construct X so that it stands upright IN THE GROUND.
An erected structure remains where it is built.
It is not ferried from one place to another.
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 03 Jun 2020, 17:26
Dear GMATGuruNY,

A team of researchers reported that five endangered birds species had resumed nesting or investigating nesting boxes, erected by volunteers, ferried out to the island last month.

Why is HAD RESUMED INVESTIGATING wrong?

Do we have to assume that the ferried nesting boxes had never been erected on the island before (i.e. this is the very first time that the boxes were made by humans)?
Otherwise, I think HAD RESUMED INVESTIGATING completely makes sense.

I still don't get it. Please help sir :please: :please: :please:
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 04 Jun 2020, 02:13
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varotkorn wrote:
Dear GMATGuruNY,

A team of researchers reported that five endangered birds species had resumed nesting or investigating nesting boxes, erected by volunteers, ferried out to the island last month.

Why is HAD RESUMED INVESTIGATING wrong?

Do we have to assume that the ferried nesting boxes had never been erected on the island before (i.e. this is the very first time that the boxes were made by humans)?
Otherwise, I think HAD RESUMED INVESTIGATING completely makes sense.

I still don't get it. Please help sir :please: :please: :please:


VERBing + OR + VERBing + DIRECT OBJECT
Generally, this structure is appropriate when the direct object is applied to BOTH VERBings.
Mary considered calling or texting her husband.
Here, her husband serves as the direct object for both VERBings.
Conveyed meaning:
Mary considered calling [her husband] or texting her husband.

C: The species had resumed nesting or investigating nesting boxes.
Here, if the direct object in red is applied to the two preceding VERBings in blue, we get:
The species had resumed nesting [nesting boxes] or investigating nesting boxes.
This meaning is nonsensical.
Eliminate C.
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Re: A team of researchers reported that five endangered birds species had   [#permalink] 04 Jun 2020, 02:13

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