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Re: As a result of a supernova explosion, every human being on Earth was [#permalink]
That and that parallelism.
Fairly easy question.

Posted from my mobile device
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Re: As a result of a supernova explosion, every human being on Earth was [#permalink]
EducationAisle wrote:
TargetMBA007 wrote:
Option C: As a result of a supernova explosion, every human being on Earth was bombarded on February 23, 1987, by about 100 billion neutrinos; fortunately, neutrinos are harmless elementary particles produced in nuclear reactions and which interact very weakly with matter.


In the above, isn’t “produced in nuclear reactions” a modifier modifying “elementary particles” and hence, I initially thought “neutrons are” (i.e. a Subject (Noun) and Verb) parallel to “which (Subject/Pronoun) interact (Verb)”.

I guess I am wrong because "and" is NOT preceded by a comma here, therefore, it has to be parallel to the modifier (produced) and not with the Subject-pair (Neutrons are). Is my understanding correct?

Hello TargetMBA007, it's not so much about presence or absence of comma. Generally speaking, if the RHS of a parallelism trigger (and in this case) is a relative clause (which interact... in this case), then from a parallelism perspective, there should generally be another relative clause on the LHS of the parallelism trigger.

In C, we have which... on the RHS, but no corresponding relative clause on the LHS; hence C is not ideal from a parallelism perspective.

Quote:
Also if the sentence was without which, would the below variations be correct:
Added the comma before "and" without which.
Quote:
fortunately, neutrinos are harmless elementary particles produced in nuclear reactions, and interact very weakly with matter.

Not correct. Any of the following would be preferable:

i) fortunately, neutrinos are harmless elementary particles produced in nuclear reactions and interacting very weakly with matter.
- Here, parallelism is between two participial phrases: produced and interacting, both modifying particles.

ii) fortunately, neutrinos are harmless elementary particles produced in nuclear reactions, and they interact very weakly with matter.
- Here, parallelism is between two Independent clauses (ICs): First IC: neutrinos are harmless elementary particles produced in nuclear reactions Second IC: they interact very weakly with matter.


Hi egmat KarishmaB GMATNinja , can you explain when do we need to repeat that in a parallel construction?
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Re: As a result of a supernova explosion, every human being on Earth was [#permalink]
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ankitapugalia wrote:
Hi egmat KarishmaB GMATNinja , can you explain when do we need to repeat that in a parallel construction?


We may need to repeat a word to signal the start of a parallel element when without the repetition, the structure of the sentence may not be clear. This happens sometimes when a parallel element may itself have a list.

... fortunately, neutrinos are harmless elementary particles that are produced in nuclear reactions and that interact very weakly with matter.

We can break this into:
- neutrinos are harmless elementary particles that are produced in nuclear reactions
- neutrinos are harmless elementary particles that interact very weakly with matter

Without 'that,' the structure may not be clear.

fortunately, neutrinos are harmless elementary particles that are produced in nuclear reactions and interact very weakly with matter.

What do we want to say?
We are fortunate neutrinos are harmless particles with two characteristics (produced in ... and interact weakly ...)
or
We are fortunate neutrinos are harmless particles that are produced in ... and we are fortunate neutrinos interact very weakly with matter

Hence the extra 'that' was put in to clarify the message.

This post gives you an example of a sentence when a parallel element itself has a list and hence we repeat some words: https://anaprep.com/sentence-correction ... rallelism/
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Re: As a result of a supernova explosion, every human being on Earth was [#permalink]
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