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10 Feb 2020, 05:33
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Difficulty:
35%
(medium)
Question Stats:
62% (00:58) correct
38%
(01:16)
wrong
based on 1577
sessions
History
Date
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Result
Not Attempted Yet
The relationship between cell phone use and the incidence of brain tumors is still unclear, this is because some studies show a causal relationship while others do not.
(A) is still unclear, this is because some studies show
(B) is still unclear; some studies show
(C) are still unclear because some studies show
(D) is still unclear because: some studies show
(E) is still unclear; the reason is that some studies show
(A) is still unclear, this is because some studies show
(B) is still unclear; some studies show
(C) are still unclear because some studies show
(D) is still unclear because: some studies show
(E) is still unclear; the reason is that some studies show
12 Feb 2020, 04:02
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Bunuel
OFFICIAL EXPLANATION
The original sentence incorrectly uses a comma to join two independent clauses. As is the case with the two clauses in this sentence (“The relationship…is still unclear” and “this is because some studies show…while others do not”), independent clauses contain a subject and a verb and can stand alone as independent sentences. While semicolons can join two independent clauses, commas cannot. Further, “this is because” is unnecessarily wordy.
(A) This choice is incorrect as it repeats the original sentence.
(B) CORRECT. The semicolon correctly connects two independent clauses. Also, the singular verb “is” agrees in number with the singular subject “relationship.”
(C) The plural verb “are” does not agree in number with the singular subject “relationship.”
(D) While “is” agrees in number with the singular subject “relationship,” the colon is used incorrectly in this choice. Colons must be preceded by independent clauses. Independent clauses contain a subject and a verb and can stand alone as independent sentences. In this case, however, the colon is preceded by “The relationship…is still unclear because,” which is not a clause that can stand alone as an independent sentence.
(E) While the semicolon correctly connects two independent clauses, and while “is” agrees in number with the singular subject “relationship,” “the reason is that” is unnecessarily wordy. The more concise version in answer choice (B) is preferred.
General Discussion
10 Feb 2020, 05:51
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The relationship between cell phone use and the incidence of brain tumors is still unclear, this is because some studies show a causal relationship while others do not.
(A) is still unclear, this is because some studies show
Incorrect. In the above passage 'the relationship is the subject and is singular. Hence the use of 'is' is correct at the beginning of the underlined portion. But two independent clauses are separated by a single comma.
(B) is still unclear; some studies show
Incorrect. The above-mentioned errors are rectified but the second independent clause failed to present the reason for the first IC.
(C) are still unclear because some studies show
Incorrect. as discussed, usage of 'are' is incorrect
(D) is still unclear because: some studies show
Incorrect. 'because' followed by a colon is incorrect
(E) is still unclear; the reason is that some studies show
Correct Answer
(A) is still unclear, this is because some studies show
Incorrect. In the above passage 'the relationship is the subject and is singular. Hence the use of 'is' is correct at the beginning of the underlined portion. But two independent clauses are separated by a single comma.
(B) is still unclear; some studies show
Incorrect. The above-mentioned errors are rectified but the second independent clause failed to present the reason for the first IC.
(C) are still unclear because some studies show
Incorrect. as discussed, usage of 'are' is incorrect
(D) is still unclear because: some studies show
Incorrect. 'because' followed by a colon is incorrect
(E) is still unclear; the reason is that some studies show
Correct Answer
