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09 Jul 2021, 06:00
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
89% (01:24) correct
11%
(01:29)
wrong
based on 79
sessions
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Historians are unsure whether the Black Death, one of the most devastating events in recorded human history, actually affected population levels or not since these levels had already begun a gradual decline due to living conditions years before.
A. Historians are unsure whether the Black Death, one of the most devastating events in recorded human history, actually affected population levels or not
B. Historians are unsure whether the Black Death, a most devastating event in recorded human history, actually affected population levels
C. Historians are unsure whether the Black Death, one of the most devastating events in recorded human history, actually affected population levels
D. The Black Death is one of the most devastating events in recorded human history, but historians are unsure if it actually affected population levels
E. Historians are unsure whether the Black Death, which is known to be one of the most devastating events in recorded human history, actually affected population levels
A. Historians are unsure whether the Black Death, one of the most devastating events in recorded human history, actually affected population levels or not
B. Historians are unsure whether the Black Death, a most devastating event in recorded human history, actually affected population levels
C. Historians are unsure whether the Black Death, one of the most devastating events in recorded human history, actually affected population levels
D. The Black Death is one of the most devastating events in recorded human history, but historians are unsure if it actually affected population levels
E. Historians are unsure whether the Black Death, which is known to be one of the most devastating events in recorded human history, actually affected population levels
11 Jul 2021, 04:00
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OFFICIAL EXPLANATION
Historians are unsure whether the Black Death, one of the most devastating events in recorded human history, actually affected population levels or not since these levels had already begun a gradual decline due to living conditions years before.
A. Historians are unsure whether the Black Death, one of the most devastating events in recorded human history, actually affected population levels or not
In the GMAT, the addition of the phrase or not at any point after the word whether is considered redundant.
B. Historians are unsure whether the Black Death, a most devastating event in recorded human history, actually affected population levels
The original sentence uses or not after whether. Although this answer choice eliminates this original Redundancy error, it is grammatically incorrect. The superlative form, indicated here by the use of the word most, must be preceded by the word the. In this sentence, most devastating event in recorded human history is preceded by a.
C. Historians are unsure whether the Black Death, one of the most devastating events in recorded human history, actually affected population levels
This answer choice eliminates the original redundancy mistake.
In the GMAT, the addition of the phrase or not at any point after the word whether is considered redundant.
D. The Black Death is one of the most devastating events in recorded human history, but historians are unsure if it actually affected population levels
The original sentence uses or not after whether. Although this answer choice eliminates this original Redundancy error, it does so by using if instead of whether. In the GMAT, If is used in Conditionals only. If you see if in a sentence and there's no condition, you should replace if with whether.
Think of whether as a choice between two possibilities dealing with the same subject or as a yes/no question.
Example: I do not know whether this will work. (yes or no)
He was not sure whether he wanted banana or chocolate cake. (a choice between 2 possibilities)
E. Historians are unsure whether the Black Death, which is known to be one of the most devastating events in recorded human history, actually affected population levels
The original sentence uses or not after whether. Although this answer choice eliminates this original Redundancy error, it is stylisticially flawed. The unnecessarily wordy phrase which is known to be one of the most creates Redundancy.
General Discussion
09 Jul 2021, 12:38
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Historians are unsure whether the Black Death, one of the most devastating events in recorded human history, actually affected population levels or not since these levels had already begun a gradual decline due to living conditions years before.
A. Historians are unsure whether the Black Death, one of the most devastating events in recorded human history, actually affected population levels or not - "Weather or not" is unidiomatic and never used in GMAT
B. Historians are unsure whether the Black Death, a most devastating event in recorded human history, actually affected population levels -The most devastating event is the correct usage
C. Historians are unsure whether the Black Death, one of the most devastating events in recorded human history, actually affected population levels -Correct answer
D. The Black Death is one of the most devastating events in recorded human history, but historians are unsure if it actually affected population levels - "If" is only used in conditionals
E. Historians are unsure whether the Black Death, which is known to be one of the most devastating events in recorded human history, actually affected population levels - which is known to be makes the sentence wordy
A. Historians are unsure whether the Black Death, one of the most devastating events in recorded human history, actually affected population levels or not - "Weather or not" is unidiomatic and never used in GMAT
B. Historians are unsure whether the Black Death, a most devastating event in recorded human history, actually affected population levels -The most devastating event is the correct usage
C. Historians are unsure whether the Black Death, one of the most devastating events in recorded human history, actually affected population levels -Correct answer
D. The Black Death is one of the most devastating events in recorded human history, but historians are unsure if it actually affected population levels - "If" is only used in conditionals
E. Historians are unsure whether the Black Death, which is known to be one of the most devastating events in recorded human history, actually affected population levels - which is known to be makes the sentence wordy
