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Researchers have developed a simple mathematical model that suggests

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Researchers have developed a simple mathematical model that suggests  [#permalink]

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12 Dec 2015, 19:49
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45% (medium)

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58% (01:23) correct 42% (01:29) wrong based on 364 sessions

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Researchers have developed a simple mathematical model that suggests that microbes living in sauropod dinosaurs produced enough methane to have an important effect on Earth's climate 150 million years ago.

[A] that suggests that microbes living in sauropod dinosaurs produced
[B] suggesting that microbes living in sauropod dinosaurs may have produced
[C] to suggest that microbes living in sauropod dinosaurs may have produced
[D] that suggests that microbes living in sauropod dinosaurs may have been producing
[E] that suggested that microbes living in sauropod dinosaurs had produced

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Re: Researchers have developed a simple mathematical model that suggests  [#permalink]

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12 Dec 2015, 23:18
Verb following mathematical model should be in simple present. So B, C and E are out.

Between A and D --> D uses may have been producing. But the effect has occurred 150 million years ago. So usage of continuous tense is not correct. D is out. A correctly uses the past tense.

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Re: Researchers have developed a simple mathematical model that suggests  [#permalink]

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13 Dec 2015, 10:36
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[A] that suggests that microbes living in sauropod dinosaurs produced--- looks good, since the reported speech used a relative clause introduced by the relative pronoun ‘that’. The use of simple past is relevant to describe a past event.

[B] suggesting that microbes living in sauropod dinosaurs may have produced; --- misses the relevance of using the relative clause; secondly the tense ‘may have produced’ could be better with ‘might have produced’ to gel with the pastness of the event.

[C] to suggest that microbes living in sauropod dinosaurs may have produced --- --- to suggest may imply that the researchers created the model in order to suggest rather than find out some fact in addition to the inappropriate ‘may have produced”

[D] that suggests that microbes living in sauropod dinosaurs may have been producing – may have been producing’ is wrong.

[E] that suggested that microbes living in sauropod dinosaurs had produced -- ‘have developed' and 'that suggested', do not go in tandem, aside the improper ‘had produced’.
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Re: Researchers have developed a simple mathematical model that suggests  [#permalink]

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15 Dec 2015, 23:09
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Explanation:

“Suggest” vs. “suggesting”vs. suggested... “have developed” indicates present tense so “suggests”.“Have produced” vs. “may have been producing” (past tense needed).
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Re: Researchers have developed a simple mathematical model that suggests  [#permalink]

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02 Jan 2016, 11:27
I ruled out B , C , D as suggest and may both assert uncertainty of the event, making the construction redundant
Also suggest is subjunctive word which requires plutal verb after that so E is incorrect
Correct me if I am wrong
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Re: Researchers have developed a simple mathematical model that suggests  [#permalink]

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03 Jan 2016, 09:20
Researchers have developed a simple mathematical model that suggests that microbes living in sauropod dinosaurs produced enough methane to have an important effect on Earth's climate 150 million years ago.

[A] that suggests that microbes living in sauropod dinosaurs produced
[B] suggesting that microbes living in sauropod dinosaurs may have produced
[C] to suggest that microbes living in sauropod dinosaurs may have produced
[D] that suggests that microbes living in sauropod dinosaurs may have been producing
[E] that suggested that microbes living in sauropod dinosaurs had produced

why B is wrong?

we have to find out why b is wrong or this question is not good
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Re: Researchers have developed a simple mathematical model that suggests  [#permalink]

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03 Jan 2016, 11:05
thangvietnam wrote:
Researchers have developed a simple mathematical model that suggests that microbes living in sauropod dinosaurs produced enough methane to have an important effect on Earth's climate 150 million years ago.

[A] that suggests that microbes living in sauropod dinosaurs produced
[B] suggesting that microbes living in sauropod dinosaurs may have produced
[C] to suggest that microbes living in sauropod dinosaurs may have produced
[D] that suggests that microbes living in sauropod dinosaurs may have been producing
[E] that suggested that microbes living in sauropod dinosaurs had produced

why B is wrong?

we have to find out why b is wrong or this question is not good

Hi Thangvietnam,

Here option B "may have produced" shows uncertainity.

As per the meaning of the original sentence, researchers have developed some model & that model suggests something happened in the past.(here microbes living in sauropod dinosaurs produced something)

Also option B - distorts the meaning of the original sentence
This choice says Researchers have developed a model which is already suggesting something.
Researchers have developed a simple mathematical model suggesting that microbes living in sauropod dinosaurs may have produced enough methane to have an important effect on Earth's climate 150 million years ago.
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Re: Researchers have developed a simple mathematical model that suggests  [#permalink]

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03 Jan 2016, 22:44
The problem of B is at least two fold; it is an accepted style that contents of a reported speech are normally presented in a relative clause that starts with a connector as ‘that’ in order to make the contents essential and clear. B is precisely missing this style by presenting in a modifier, which is a less vital way than a verbed clause. In addition, B by using a speculative ‘may have produced’ adds to the vagueness. B, although grammatically acceptable, is certainly inferior to A.
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Re: Researchers have developed a simple mathematical model that suggests  [#permalink]

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04 Jan 2016, 01:07
A is concise and the correct answer.
may have produced in B hits the wrong road, as if at all some uncertainty needs to be shown, it should use the past modal : might.
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Re: Researchers have developed a simple mathematical model that suggests  [#permalink]

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07 Jan 2016, 03:16
"Suggest" and "may" is redundant in this case to which I agree but here "suggest" has not been used in the subjunctive format. I would rule out "E" because of suggest being used in the past tense. The model is applicable in the present scenario. So past tense cannot be used.
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Re: Researchers have developed a simple mathematical model that suggests  [#permalink]

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31 Mar 2018, 09:17
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Re: Researchers have developed a simple mathematical model that suggests   [#permalink] 31 Mar 2018, 09:17
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