OFFICIAL EXPLANATIONProject SC Butler: Sentence Correction (SC2)
THE PROMPTQuote:
The success of sailboat racing as a television sport largely depends on the technology in the helicopters that fly above to a great deal, technology so advanced that it makes the insertion of a first-down line during the broadcast of a football game seem insignificant.
• Meaning?
Whether sailboat racing is successful as a television sport depends largely on technology in the helicopters that fly above the sailboats.
That technology is so advanced that it makes other television sports technology seem insignificant.
THE OPTIONSQuote:
A) largely depends on the technology in the helicopters that fly above to a great deal, technology so advanced that it makes the insertion of a first-down line during the broadcast of a football game seem insignificant
•
largely depends and
to a great deal are redundant
ELIMINATE A
Quote:
B) to a great deal depends on the helicopter technology that flies above, technology so advanced that it makes the insertion of a first-down line during the broadcast of a football game seem insignificant
• technology that is carried
in or
by the helicopters that fly above the sailboats is not the same thing as "helicopter technology."
Technology that can film a sailboat race and make it exciting is different from technology that makes helicopters fly.
• Nonsensical. Helicopter technology cannot itself fly. The expression itself is silly.
ELIMINATE B
Quote:
C) to a great deal depends on the helicopter technology that fly above, technology so advanced that it makes the first-down line during a football game seem insignificant
• subject-verb agreement: singular technology requires the singular verb
flies, not the plural verb
fly• nonsensical: helicopter technology does not itself fly
ELIMINATE C
Quote:
D) largely depends on the technology in the helicopters that fly above, technology so advanced that it makes the insertion of a first-down line during a football game broadcast seem insignificant
• I see no issues
KEEP
Quote:
E) largely depends on the advanced technology in the helicopters flying above that make the insertion of a first-down line during a football game broadcast seem insignificant
• This option is either ungrammatical or illogical.
• Ungrammatical: the singular word technology [in the helicopters flying above] requires the singular verb
makes→
technology anchors a long noun phrase (in the helicopters flying above) and is the true grammatical candidate for subject of that clause
• Illogical: perhaps the plural word
make refers to
the helicopters (flying above)
→ but the helicopters do not make the insertion of a first-down during a televised football game seem insignificant; the technology itself makes the insertion of a first-down lined during a football game seem insigificant.
ELIMINATE E
The answer is D.
COMMENTSpgwodehouse , welcome to SC Butler.
warrior1991 , I wanna duck your question because prep companies are not always consistent with terminology.
If by
noun phrase you mean an appositive (a noun phrase that describes another noun), then yes, what you see is a "nice noun phrase"

that describes the technology.
You do not see an absolute phrase that almost always modifies a whole sentence.
This particular noun phrase is called a
resumptive modifier.We repeat a word from some other part of the sentence and expand upon or give detail about it.
Because we pick up from some other part of the sentence and repeat a word, we call this kind of modifier a resumptive ("resume") modifier.
In the end, you will all be fine if you are able to identify appositives and appositive phrases.
GMAT uses them frequently.
Absolute phrases are very rare on the GMAT.
I talked a little bit about resumptive modifiers (which are a special kind of appositive) beneath option A in
this post, here. Better yet, I linked to a nice little article about resumptive modifiers.
At any rate, you've gotten straight to the heart of the matter.
These posts range from excellent to outstanding. Nicely done. Happy kudos.