Bunuel
When investigating an incident from the distant past, it is a common occurrence that there is partially or completely conflicting accounts of the same event and, therefore, to construct a realistic historical hypothesis, one should collate as many records as one can.
A. When investigating an incident from the distant past, it is a common occurrence that there is partially or completely conflicting accounts of the same event and, therefore, to construct a realistic historical hypothesis, one should collate as many records as one can
B. To construct a realistic historical hypothesis, one should collate as many records as one can because when investigating an incident from the distant past, it is a common occurrence that there are partially or completely conflicting accounts of the same event
C. When investigating an incident from the distant past, it is a common occurrence that there are partially or completely conflicting accounts of the same event, and to construct a realistic historical hypothesis, one should therefore collate as many records as he can
D. When investigating an incident from the distant past, a common occurrence is that there are partially or completely conflicting accounts of the same event, so one should collate as many records as they can in order to construct a realistic historical hypothesis
E. To construct a realistic historical hypothesis, one should collate as many records as one can because when investigating an incident from the distant past, it commonly occurs that there is partially or completely conflicting accounts of the same event
OFFICIAL EXPLANATION
When investigating an incident from the distant past, it is a common occurrence that there is partially or completely conflicting accounts of the same event and, therefore, to construct a realistic historical hypothesis, one should collate as many records as one can.
A. When investigating an incident from the distant past, it is a common occurrence that there is partially or completely conflicting accounts of the same event and, therefore, to construct a realistic historical hypothesis, one should collate as many records as one can
This answer choice is grammatically incorrect. The plural subject conflicting accounts does not agree with the singular verb is. Once the verb is located, it is important to ask what the subject of that verb is.
What helps us identify this question as a Subject Verb Agreement question and identify the mistake is the following Stop Sign:
The verb precedes the subject B. To construct a realistic historical hypothesis, one should collate as many records as one can because when investigating an incident from the distant past, it is a common occurrence that there are partially or completely conflicting accounts of the same event
This answer choice corrects the original Subject Verb Agreement error by matching the plural verb are with the plural subject conflicting accounts.C. When investigating an incident from the distant past, it is a common occurrence that there are partially or completely conflicting accounts of the same event, and to construct a realistic historical hypothesis, one should therefore collate as many records as he can
Although this answer choice corrects the original Subject Verb Agreement error by matching the plural verb are with the plural subject conflicting accounts, it is grammatically incorrect. The pronouns he can refer to human male nouns, but there's no such noun in the sentence.
The pronoun one agrees with itself only.
Example: One must be careful with what one wishes for.
What helps us identify this question as a Pronoun question as well as identify the mistake is the following Stop Sign:
Every pronoun in the underlined part of the sentence or after itD. When investigating an incident from the distant past, a common occurrence is that there are partially or completely conflicting accounts of the same event, so one should collate as many records as they can in order to construct a realistic historical hypothesis
Although this answer choice corrects the original Subject Verb Agreement error by matching the plural verb are with the plural subject conflicting accounts, it is grammatically incorrect. The pronoun they refers to one but does not agree with it as one is singular and they is plural.
The pronoun one agrees with itself only.
Example: One must be careful with what one wishes for.E. To construct a realistic historical hypothesis, one should collate as many records as one can because when investigating an incident from the distant past, it commonly occurs that there is partially or completely conflicting accounts of the same event
This answer choice is grammatically incorrect and repeats the original Subject Verb Agreement error. The plural subject conflicting accounts does not agree with the singular verb is.
What helps us identify this question as a Subject Verb Agreement question and identify the mistake is the following Stop Sign:
The verb precedes the subject