OFFICIAL EXPLANATION
Project SC Butler: Sentence Correction (SC1)
For SC butler Questions Click Here This OE from Princeton Review is almost verbatim.THE PROMPTQuote:
The space shuttle has complicated stabilizing systems that undergo extensive tests and repairs during layovers
between launching from Cape Canaveral because of the tremendous pressure and strain inflicted on it during its lengthy missions.
• Meaning?
Because tremendous pressure and strain are inflicted on the space shuttle, it possess complicated stabilizing systems.
Those systems undergo tests and repairs during layovers between the space shuttle's launches.
THE OPTIONS Quote:
→ should be
between its launchesQuote:
→ nonsensical
What is a "layover of launching"?
We can have a layover between launchings, or a layover of a few days, but there is no such thing as a "layover" of launching.
Quote:
Quote:
There are layovers in (during?) the launches? Nonsense.
Quote:
The tests and repairs occur
as the space shuttle launches?
Lemme guess. Elon Musk was in on it.
OFFICIAL EXPLANATION
The underlined portion of the sentence contains the present participle verbal
launching so check to make sure this is the correct verb tense.
According to the non-underlined portion of the sentence, which contains the verb
has [used in the sense of "to possess"), the present participle
launching is the incorrect verb tense for the sentence.
Eliminate choice A and look for obvious repeaters.
While choice B also contains the word
launching, the answer choice changes the structure of the underlined portion, so it is not an obvious repeater.
Choice B introduces a modifier error.
The prepositional phrase
of launching functions as an adjective, modifying the noun
layovers.
Eliminate choice B.
Choice C corrects the idiom error in the original sentence by replacing the participle
launching with the plural noun
launches, stating that layovers occur in the time between launches of the shuttle. Keep choice C.
Choice D introduces a modifier error.
The prepositional phrase
of its launches functions as an adjective, modifying the noun
layovers.
Choice D suggests not that
the space shuttle has layovers, but that
its launches from Cape Canaveral
have layovers. Eliminate choice D.
Choice E uses the phrase
as it launches, which functions as an adverb modifying the verb
undergo by specifying the time during which the stabilizing systems undergo extensive tests and repairs.
Choice E suggests that the shuttle undergoes extensive tests and repairs both during layovers and as it launches.
Eliminate choice E.
Alternatively, if the grammar rule this sentence is testing is difficult to spot, another strategy is to identify an error from the answer choices by looking for either a 2/3 split or differences among the answers. Two of the answer choices end with the participle launching, and three of the answer choices end with the noun launches. This difference is an indication to look for modifier errors.
Choice A: No. The present participle
launching is the incorrect tense for this sentence. Verb tense.
Choice B: No. The prepositional phrase
of launching incorrectly modifies
layovers. Misplaced modifier.
Choice C: Correct.
Choice D: No. The prepositional phrase
of its launching incorrectly modifies
layovers. Misplaced modifier.
Choice E: No. The phrase
as it launches incorrectly modifies
undergo. Misplaced modifier.
The answer is C.COMMENTSSushil117 , welcome to SC Butler.
These explanations are thoughtful and easy to follow.
Nicely done.