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08 Jul 2015, 06:48
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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78% (01:01) correct
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In the famous thought experiment that inspired the theory of relativity, Einstein asked himself whether a beam of light would look the same to an observer moving alongside the beam at the same speed as an observer who was stationary.
(A) speed as an observer
(B) speed as to an observer
(C) speed; just as it would to an observer
(D) speed, as it would to an observer
(E) speed; just as to the observer
(A) speed as an observer
(B) speed as to an observer
(C) speed; just as it would to an observer
(D) speed, as it would to an observer
(E) speed; just as to the observer
08 Jul 2015, 16:49
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target2015
In the famous thought experiment that inspired the theory of relativity, Einstein asked himself whether a beam of light would look the same to an observer moving alongside the beam at the same speed as an observer who was stationary.
(A) speed as an observer
(B) speed as to an observer
(C) speed; just as it would to an observer
(D) speed, as it would to an observer
(E) speed; just as to the observer
Dear target2015,(A) speed as an observer
(B) speed as to an observer
(C) speed; just as it would to an observer
(D) speed, as it would to an observer
(E) speed; just as to the observer
I'm happy to help!
This question concerns parallelism. The basic structure is
same to X as to Y
Notice that each branch of the parallelism contains a preposition beginning with "to." Choice (B) perfectly captures this parallel structure.
The language of choice (B) may sound awkward to some students precisely because it is sophisticated. It involves the issue of omitted words in parallel. See this blog article for more about that:
https://magoosh.com/gmat/2013/dropping-c ... -the-gmat/
Does this answer your question?
Mike
22 Aug 2019, 23:09
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target2015
In the famous thought experiment that inspired the theory of relativity, Einstein asked himself whether a beam of light would look the same to an observer moving alongside the beam at the same speed as an observer who was stationary.
(A) speed as an observer
(B) speed as to an observer
(C) speed; just as it would to an observer
(D) speed, as it would to an observer
(E) speed; just as to the observer
(A) speed as an observer
(B) speed as to an observer
(C) speed; just as it would to an observer
(D) speed, as it would to an observer
(E) speed; just as to the observer
Official Explanation
Creating a filter: In this question, we don't have to know Einstein's physics to answer correctly, but we do need a sense of the sentence's intended meaning. People go astray on the GMAT all the time by trying to apply pure grammar and style rules without considering the intended meaning of the sentence. We are primarily comparing how light looks to a moving person and how it looks to a stationary person. Grammatically, we can extract the modifying phrase "moving alongside the beam at the same speed" without altering the surrounding grammar of the sentence. That leaves "would look the same to an observer... as an observer who was stationary." That doesn't sound terrible, but it's not a parallel comparison.
Applying the filter: choice (B) gives a parallel comparison.
Further notes: choice (A) is also ambiguous. It could also be taken to mean "would look the same to an observer.... as an observer who was stationary would look." Totally different meaning. (C), (D), and (E) all variously include unnecessary punctuation, repetition of the pronoun, and the word "just."
The correct answer is (B).
