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In January 2015, geoscientists proved the previously discarded theory

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In January 2015, geoscientists proved the previously discarded theory  [#permalink]

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06 Aug 2018, 21:50
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60% (01:18) correct 40% (01:20) wrong based on 102 sessions

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In January 2015, geoscientists proved the previously discarded theory that some of the ocean's underwater volcanoes did not erupt from hot spots in the Earth's mantle but instead were formed from cracks or fissures in the oceanic crust.

A. that some of the ocean's underwater volcanoes did not erupt from hot spots in the Earth's mantle but instead were

B. in which some of the ocean's underwater volcanoes had not erupted from hot spots in the Earth's mantle but instead had

C. that some of the ocean's underwater volcanoes had not erupted from hot spots in the Earth's mantle but instead were

D. that some of the ocean's underwater volcanoes from hot spots did not erupt in the Earth's mantle but instead were

E. in which some of the ocean's underwater volcanoes did not erupt from hot spots in the Earth's mantle but instead were

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Re: In January 2015, geoscientists proved the previously discarded theory  [#permalink]

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06 Aug 2018, 21:56
Split A:
Prove... That POE b & d

Split B:
Past perfect is correct, hence C.

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Re: In January 2015, geoscientists proved the previously discarded theory  [#permalink]

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06 Aug 2018, 23:38
workout wrote:
In January 2015, geoscientists proved the previously discarded theory that some of the ocean's underwater volcanoes did not erupt from hot spots in the Earth's mantle but instead were formed from cracks or fissures in the oceanic crust.

A. that some of the ocean's underwater volcanoes did not erupt from hot spots in the Earth's mantle but instead were

B. in which some of the ocean's underwater volcanoes had not erupted from hot spots in the Earth's mantle but instead had

C. that some of the ocean's underwater volcanoes had not erupted from hot spots in the Earth's mantle but instead were

D. that some of the ocean's underwater volcanoes from hot spots did not erupt in the Earth's mantle but instead were

E. in which some of the ocean's underwater volcanoes did not erupt from hot spots in the Earth's mantle but instead were

Will go with A.. Don't see the usage of "had" as valid.
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Re: In January 2015, geoscientists proved the previously discarded theory  [#permalink]

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06 Aug 2018, 23:59
1
I go with A. I think that it is more parallel
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Re: In January 2015, geoscientists proved the previously discarded theory  [#permalink]

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07 Aug 2018, 00:54
+1 for A

We don't need had as time is mentioned (Jan, 2015).
sudarshan22
Is my understanding correct?

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Re: In January 2015, geoscientists proved the previously discarded theory  [#permalink]

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07 Aug 2018, 01:45
1
1
Akash720 wrote:
+1 for A

We don't need had as time is mentioned (Jan, 2015).
sudarshan22
Is my understanding correct?

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Akash720
You are correct about the fact that when time is specified past perfect is not required, but here Jan, 2015 is not the deciding factor for usage of "had".
Event "prove" is not resulting sequence of the other event "erupt", so past perfect "had" is not required.
Only A and D looks legit, but D changes meaning, therefore A.
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Re: In January 2015, geoscientists proved the previously discarded theory  [#permalink]

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07 Aug 2018, 04:22
workout wrote:
In January 2015, geoscientists proved the previously discarded theory that some of the ocean's underwater volcanoes did not erupt from hot spots in the Earth's mantle but instead were formed from cracks or fissures in the oceanic crust.

A. that some of the ocean's underwater volcanoes did not erupt from hot spots in the Earth's mantle but instead were

B. in which some of the ocean's underwater volcanoes had not erupted from hot spots in the Earth's mantle but instead had

C. that some of the ocean's underwater volcanoes had not erupted from hot spots in the Earth's mantle but instead were

D. that some of the ocean's underwater volcanoes from hot spots did not erupt in the Earth's mantle but instead were

E. in which some of the ocean's underwater volcanoes did not erupt from hot spots in the Earth's mantle but instead were

IMO usage of had is not required here so options B and C are out.
E is out for the usage of in which.
There's slight meaning change in D.Hence, A is the Answer.
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Re: In January 2015, geoscientists proved the previously discarded theory  [#permalink]

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08 Aug 2018, 15:57
+ 1 for A

Its a theory so it must be ina normal tense
Re: In January 2015, geoscientists proved the previously discarded theory &nbs [#permalink] 08 Aug 2018, 15:57
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In January 2015, geoscientists proved the previously discarded theory

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