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04 Jul 2020, 23:53
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
74% (00:46) correct
26%
(00:47)
wrong
based on 479
sessions
History
Date
Time
Result
Not Attempted Yet
SpaceX was founded in June 2002 by Elon Musk, whose goal was to build a simple and relatively inexpensive reusable rocket which returns into space on multiple occasions.
A) which returns
B) that returns
C) which will return
D) that could return
E) having returned
04 Jul 2020, 23:58
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OFFICIAL EXPLANATION
THE PROMPT
• The main issues tested in this sentence are
(1) which vs. that
(2) verb tense: how to convey a hypothetical
THE OPTIONS
-- which should be preceded by a comma because it introduces nonessential information
In (A), no comma exists before which.
The fact that the rocket is supposed to return is central to the meaning of the sentence
→ which and that are not interchangeable on the GMAT
-- which: introduces nonessential information and is preceded or set off by commas
-- that: introduces essential information and is almost never preceded by a comma
→ in British English, which and that are interchangeable.
If you speak B.E., be a bit careful.
→ Yes, GMAC still tests the issue.
SPOILER ALERT In OG 2020, SC #824 explicitly tests the which/that distinction.
That official question is here.
• returns is not the correct verb tense. See option B.
ELIMINATE A
→ the sentence describes a hypothetical event, a fact that we can figure out from the word goal
→ simple present cannot be used to convey a hypothetical event
• if you are not sure, keep B (and then discard when you reach option D)
ELIMINATE B
• will return is simple future tense, which is not used to describe a hypothetical event
ELIMINATE C
• the condition could return works well because it describes a hypothetical event
KEEP D
→ having returned is used to show that an event has already occurred, but this sentence refers to an event that has not yet occurred.
ELIMINATE E
The answer is D.
Suppose that you kept B and D, but you're stuck.
Re-read the sentence, looking for clues, perhaps subtle, that the sentence is describing a hypothetical.
Look for a word that connotes the future or the unreal past.
You should notice that the word goal indicates an event that has not yet happened.
Bingo. Could return is better than returns. Option D is the answer.
COMMENTS
vanshi2301 and NitishJain , welcome to SC Butler.
Most of these answers range from very good to outstanding.
tyildirim92 wrote an interesting tidbit:
on behalf of the GmatClub SC Butler Project family, I would like to send my best regards to the astronauts, Robert Behnken and Douglas Hurley, who embarked on the Falcon 9 project recently
Very cool. Indeed we will send best regards to those astronauts. Thank you for including this interesting detail.
What if they Google themselves and find your shout out? Kinda awesome.
These answers range from good to excellent. Nice work.
Project SC Butler: Sentence Correction (SC2)
THE PROMPT
Quote:
• Notice that Elon Musk had a goal. A goal strives to create something that does not yet exist.
• The main issues tested in this sentence are
(1) which vs. that
(2) verb tense: how to convey a hypothetical
THE OPTIONS
Quote:
• which is not correct
-- which should be preceded by a comma because it introduces nonessential information
In (A), no comma exists before which.
The fact that the rocket is supposed to return is central to the meaning of the sentence
→ which and that are not interchangeable on the GMAT
-- which: introduces nonessential information and is preceded or set off by commas
-- that: introduces essential information and is almost never preceded by a comma
→ in British English, which and that are interchangeable.
If you speak B.E., be a bit careful.
→ Yes, GMAC still tests the issue.
SPOILER ALERT In OG 2020, SC #824 explicitly tests the which/that distinction.
That official question is here.
• returns is not the correct verb tense. See option B.
ELIMINATE A
Quote:
• returns is not the correct verb tense
→ the sentence describes a hypothetical event, a fact that we can figure out from the word goal
→ simple present cannot be used to convey a hypothetical event
• if you are not sure, keep B (and then discard when you reach option D)
ELIMINATE B
Quote:
• which creates the same problems as those in (A)
• will return is simple future tense, which is not used to describe a hypothetical event
ELIMINATE C
Quote:
• I see no errors
• the condition could return works well because it describes a hypothetical event
KEEP D
Quote:
• this option creates an illogical fragment
→ having returned is used to show that an event has already occurred, but this sentence refers to an event that has not yet occurred.
ELIMINATE E
The answer is D.
Suppose that you kept B and D, but you're stuck.
Re-read the sentence, looking for clues, perhaps subtle, that the sentence is describing a hypothetical.
Look for a word that connotes the future or the unreal past.
You should notice that the word goal indicates an event that has not yet happened.
Bingo. Could return is better than returns. Option D is the answer.
COMMENTS
vanshi2301 and NitishJain , welcome to SC Butler.
Most of these answers range from very good to outstanding.
tyildirim92 wrote an interesting tidbit:
on behalf of the GmatClub SC Butler Project family, I would like to send my best regards to the astronauts, Robert Behnken and Douglas Hurley, who embarked on the Falcon 9 project recently
Very cool. Indeed we will send best regards to those astronauts. Thank you for including this interesting detail.
What if they Google themselves and find your shout out? Kinda awesome.
These answers range from good to excellent. Nice work.
General Discussion
yashikaaggarwal
Senior Moderator - Masters Forum
Joined: 19 Jan 2020
Last visit: 29 Mar 2026
Posts: 3,089
Given Kudos: 1,510
Location: India
Schools: Cranfield (A) Warwick MiM "23 (M)
GPA: 4
WE:Analyst (Internet and New Media)
05 Jul 2020, 01:07
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The passage implies that the goal was to build a rocket { which not particular, (UNCONVICTION) that implies the particular model, } where the rocket is already known to be of definite kind so we have to use that
Hence we can eliminate A and C option.
Ing is the present participle while the passage is explaining the past Occurance.
Eliminating E
The thought process is to make a rocket which can or could do something, not already been done. Hence that returns is changing the meaning of the passage.
Eliminating B option.
Giving away D as possibly best solution.
Posted from my mobile device
Hence we can eliminate A and C option.
Ing is the present participle while the passage is explaining the past Occurance.
Eliminating E
The thought process is to make a rocket which can or could do something, not already been done. Hence that returns is changing the meaning of the passage.
Eliminating B option.
Giving away D as possibly best solution.
Posted from my mobile device
