Hi nityamskhurana,

Check out the article here : markers-in-parallelism-139076.html
This should answer your question. But if used alone is a single word marker for parallelism

Sentence Meaning: The Original manuscript poet shows us that his ideas were not perfect and but were revised often over the course of many years

The original manuscript of William Wordsworth’s long autobiographical poem shows-------> This is an independent clause
that the poet normally perfected his ideas not immediately (Sub: The poet, Verb: Perfected )
but often revised his work over the course of many years.

Here looking in the context of the sentence the usage "the poet normally perfected his ideas not immediately" of not immediately is not correct and acts as a modifier

Thus option A and B can be ruled out

Now let's look at option C, D and E

E messes up the parllelism for Not X But Y where X and Y should be parallel

Usage of Past perfect Had revised is incorrect as the sentence says the work was revised over a course of many years and thus the revision may have occured at a later stage.

In Option C, The use of but is to bring contrast in the sentence and maintains the parallelism with that clause in the original sentence.

"The original manuscript of William Wordsworth’s long autobiographical poem shows
that the poet normally did not perfect his ideas immediately but
that he often revised his work over the course of many years.
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I don't think that C should be the correct option - "Verb+ that+but+that" structure doesn't make more sense that "did not do X, but Y"... OA should be option E... Please specify the source of the question and cite the official explanation provided...
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GMATNinja Could you please help here in the parallelism of "that" issue here.
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what is "that" here?
Cant understand the problem with E. Anyone can give me a better explanation?
GMATNinja can you please help

IMO that is a pronoun used to create a nice parallel what comes after the stem in the first line and to what comes in the second line.

IMO, 'That' here needs to be considered with clause that follows 'that'. The complete structure then becomes a dependent noun clause.

Ron told me that he lost his car keys.

Or,

Inscriptions on the walls of cave show that Neanderthals used sharp weapons for hunting.

In the given question too, a main clause is followed by two dependent noun clauses (as per option C).

The original manuscript of William Wordsworth’s long autobiographical poem shows (main clause)

that the poet normally did not perfect his ideas immediately (dependent noun clause 1)

but

that he often revised his work over the course of many years.
(Dependent noun clause 2).

Option E is incorrect because but is followed by 'he' which makes it a independent clause. In this option, but is not preceded by ',' as needed by FANBOYS to make it a independent clause.

Hope this helps.

Posted from my mobile device
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