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Geologists once thought that the molten rock known as lava

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Geologists once thought that the molten rock known as lava [#permalink] New post 20 Oct 2009, 17:09
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55% (02:29) correct 44% (00:57) wrong based on 4 sessions
Geologists once thought that the molten rock known as lava was an underground remnant of Earth's earliest days, sporadically erupting through volcanoes, but they now know that it is continuously created by the heat of the radioactivity deep inside the planet.
A. was an underground remnant of Earth's earliest days, sporadically erupting
B. had been an underground remnant of Earth's earliest days and sporadically erupted
C. was an underground remnant of Earth's earliest days, which sporadically erupted
D. would be an underground remnant of Earth's earliest days that sporadically erupted
E. was an underground remnant of Earth's earliest days, having sporadically erupted
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Re: Geologists once thought that the molten rock [#permalink] New post 20 Oct 2009, 17:14
A. was an underground remnant of Earth's earliest days, sporadically erupting modifier problem sporadically erupting modifies Earth`s earliest days.
B. had been an underground remnant of Earth's earliest days and sporadically erupted
C. was an underground remnant of Earth's earliest days, which sporadically erupted same problem as A
D. would be an underground remnant of Earth's earliest days that sporadically erupted not sure with D but i guess D also have modifier problem
E. was an underground remnant of Earth's earliest days, having sporadically erupted modifier problem



I think its B
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Re: Geologists once thought that the molten rock [#permalink] New post 20 Oct 2009, 20:31
between B & D
I will go with D. OA please
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Re: Geologists once thought that the molten rock [#permalink] New post 26 Oct 2009, 14:16
The OA is A

B suffers from parallelism problems, as it uses the verbs "had been" and "erupted"

A does not have a modifier problem. "Sporadically erupting" is clearly modifying molten rock.
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Re: Geologists once thought that the molten rock [#permalink] New post 26 Oct 2009, 23:30
^^OA is already given.. It is A
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Re: Geologists once thought that the molten rock [#permalink] New post 21 Dec 2010, 04:37
Eliminated b,d,e.

Between A and C.

Explanation from MGMAT:

The "ing" ending of erupting essentially allows this modifier to modify an entire clause instead of just the immediately preceding noun (which is the case, for example, in answer choice C - the "which" makes it a noun modifier and it would have to modify "days"). Which, who, where - all of those indicate noun modifiers (and noun modifiers, by definition, have to touch the noun they modify).

therefore A
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Re: Geologists once thought that the molten rock known as lava [#permalink] New post 23 Jul 2012, 16:13
My thoughts..

Geologists once thought that the molten rock known as lava was an underground remnant of Earth's earliest days, sporadically erupting through volcanoes, but they now know that it is continuously created by the heat of the radioactivity deep inside the planet.

A. was an underground remnant of Earth's earliest days, sporadically erupting - perfect & parallel
B. had been an underground remnant of Earth's earliest days and sporadically erupted - had been is unnecessary, you need simple past tense.
C. was an underground remnant of Earth's earliest days, which sporadically erupted - "which" incorrectly modifies "days" but we are attempting to modify molten rock
D. would be an underground remnant of Earth's earliest days that sporadically erupted - "would be" is incorrect here. Wrong tense. They actually BELIEVED it was a molten rock, not that it "would be". Grammar & understanding the passage helps eliminate this.
E. was an underground remnant of Earth's earliest days, having sporadically erupted - "having" is unnecessary. It also changes the meaning slightly.
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Re: Geologists once thought that the molten rock known as lava   [#permalink] 23 Jul 2012, 16:13
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