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05 Jun 2021, 21:09
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
57% (01:24) correct
43%
(01:30)
wrong
based on 467
sessions
History
Date
Time
Result
Not Attempted Yet
During the four years that the Kepler telescope was in operation, it observed about 3.2 million star transits and about 3500 exoplanet candidates were identified by it.
A) it observed about 3.2 million star transits and about 3500 exoplanet candidates were identified by it.
B) about 3.2 million star transits were observed by it and it identified about 3500 exoplanet candidates.
C) it observed about 3.2 million star transits and about 3500 exoplanet candidates were identified.
D) it observed about 3.2 million star transits, also identifying about 3500 exoplanet candidates.
E) about 3.2 million star transits were observed by it and about 3500 exoplanet candidates were identified.
05 Jun 2021, 21:23
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OFFICIAL EXPLANATION
THE PROMPT
On the GMAT and in formal writing, almost always, do not switch from active to passive voice or vice versa in the same sentence.
There are exceptions, but this question is testing that issue.
The sentence should use the active voice to describe both things or the passive voice, but not a mixture of active and passive.
We keep the same voice to maintain parallelism.
Active voice: It observed about 3.2 million star transits.
Active voice: It identified about 3500 exoplanets.
Passive voice: About 3.2 million star transits were observed by it.
Passive voice: About 3500 exoplanets were observed [by it].
THE OPTIONS
→ It observed . . . is active whereas exoplanets were identified by it is passive, breaking the parallel structure and creating stylistic dissonance.
ELIMINATE A
→ Transits were observed . . . is passive whereas it identified is active, once again breaking parallel structure and creating stylistic dissonance.
→ It observed . . . is active whereas exoplanets were identified is passive.
ELIMINATE C
→ it observed and also identifying are not parallel, but GMAC often subordinates parallelism to this construction (i.e., comma + ing)
→ this answer is certainly better than the first three, but
1) The Kepler telescope did two things, and it appears that the issue being tested is impermissible "voice switching."
2) The "also identifying" seems a little "tacked on."
In this construction, the participle phrase is correct but slightly misplaced, as if the second event were less important than the first.
(This ___ing is a participle adjective phrase that modifies "it" = the Kepler telescope.)
KEEP, but look at (E) to see whether a stricter parallelism holds.
Compare to (D). Although option D is not ungrammatical, it is a bit awkward, does not exhibit parallelism, and does not test active vs. passive voice, an issue that seems to be central to this question.
→ In the second verb phrase, the "by it" does not need to be repeated. The phrase is implied.
Eliminate D.
KEEP E
The best answer is E.
NOTES
I doubt that GMAC would put you in the position of having to choose between options D and E.
I did so to force you to play your "strategy" hand; to force you to ask yourselves, what is this question writer testing?
If we look at options A, B, C, and E, the answer to that question is clear—the question tests impermissible voice switching.
Try to start thinking about what the question writer is after.
COMMENTS
harshtandel838 , welcome to SC Butler (again).
These answers range from very good to excellent.
Nicely done.
Project SC Butler: Sentence Correction (SC2)
THE PROMPT
Quote:
The Kepler telescope did two things.
On the GMAT and in formal writing, almost always, do not switch from active to passive voice or vice versa in the same sentence.
There are exceptions, but this question is testing that issue.
The sentence should use the active voice to describe both things or the passive voice, but not a mixture of active and passive.
We keep the same voice to maintain parallelism.
Active voice: It observed about 3.2 million star transits.
Active voice: It identified about 3500 exoplanets.
Passive voice: About 3.2 million star transits were observed by it.
Passive voice: About 3500 exoplanets were observed [by it].
THE OPTIONS
Quote:
• Active voice incorrectly switches to passive voice
→ It observed . . . is active whereas exoplanets were identified by it is passive, breaking the parallel structure and creating stylistic dissonance.
ELIMINATE A
Quote:
• Passive voice incorrectly switches to active voice
→ Transits were observed . . . is passive whereas it identified is active, once again breaking parallel structure and creating stylistic dissonance.
Quote:
• Active voice incorrectly switches to passive voice (same problem as that in option A)
→ It observed . . . is active whereas exoplanets were identified is passive.
ELIMINATE C
Quote:
• tough call
→ it observed and also identifying are not parallel, but GMAC often subordinates parallelism to this construction (i.e., comma + ing)
→ this answer is certainly better than the first three, but
1) The Kepler telescope did two things, and it appears that the issue being tested is impermissible "voice switching."
2) The "also identifying" seems a little "tacked on."
In this construction, the participle phrase is correct but slightly misplaced, as if the second event were less important than the first.
(This ___ing is a participle adjective phrase that modifies "it" = the Kepler telescope.)
KEEP, but look at (E) to see whether a stricter parallelism holds.
Quote:
→ Bingo. Both verbs are in passive voice.
Compare to (D). Although option D is not ungrammatical, it is a bit awkward, does not exhibit parallelism, and does not test active vs. passive voice, an issue that seems to be central to this question.
→ In the second verb phrase, the "by it" does not need to be repeated. The phrase is implied.
Eliminate D.
KEEP E
The best answer is E.
NOTES
I doubt that GMAC would put you in the position of having to choose between options D and E.
I did so to force you to play your "strategy" hand; to force you to ask yourselves, what is this question writer testing?
If we look at options A, B, C, and E, the answer to that question is clear—the question tests impermissible voice switching.
Try to start thinking about what the question writer is after.
COMMENTS
harshtandel838 , welcome to SC Butler (again).
These answers range from very good to excellent.
Nicely done.
General Discussion
05 Jun 2021, 22:00
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generis
Notice that parallelism needed in underlined part. We must choose answer choice that has the same tone. (passive-passive or active-active). Only choice E has the parallel (passive-passive)
hence IMO E
Posted from my mobile device
