Guys I think A is more appropriate due to comparison here.
Unlike (the study put in for )/(that of) earlier works , Blassingame’s study ....relies more on records than .......
We need to compare the study/research and not the final product ....
This would ahve been correct if ...
Unlike earlier works, Blassingame's work relies on ......
Please let me know if it make sense...
Blassingame’s innovative study
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gmatinjuly
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sulabh
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Yup i agree.In A that refers ot the study of earlier works...Unlike that(study) of earlier works on slavery, Blassingame’s innovative study......
So makes the correct cmprsn !
So makes the correct cmprsn !
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I'm 100% certain that (d) is the right answer.
"that" when used with "of" creates a possessive pronoun that needs to refer to some characterstic of the earlier studies, rather than the studies themselves. Additionally, it would be very rare to use "that of" when referring to a plural noun - we would usually use "those of". "that of" would only be correct if we were referring to some communal characterstic that the studies had as a group.
An example of proper usage of "that of" would be:
"Unlike that of earlier studies, the genre of Blassingame's study is..."
More likely, we'd see something like:
"Unlike those of earlier studies, the table of contents of Blassingame's study...".
In the posted sentence, we're comparing the studies themselves to Blassingame's study, so "that of" is 100% incorrect.
As an aside, we can definitely compare a group to a specific person.
The following are proper comparisons:
"Unlike most other hockey players, Wayne Gretzky was more excited about getting an assist than a goal."
"Like her co-workers, Melissa enjoyed a good drink at happy hour."
"that" when used with "of" creates a possessive pronoun that needs to refer to some characterstic of the earlier studies, rather than the studies themselves. Additionally, it would be very rare to use "that of" when referring to a plural noun - we would usually use "those of". "that of" would only be correct if we were referring to some communal characterstic that the studies had as a group.
An example of proper usage of "that of" would be:
"Unlike that of earlier studies, the genre of Blassingame's study is..."
More likely, we'd see something like:
"Unlike those of earlier studies, the table of contents of Blassingame's study...".
In the posted sentence, we're comparing the studies themselves to Blassingame's study, so "that of" is 100% incorrect.
As an aside, we can definitely compare a group to a specific person.
The following are proper comparisons:
"Unlike most other hockey players, Wayne Gretzky was more excited about getting an assist than a goal."
"Like her co-workers, Melissa enjoyed a good drink at happy hour."

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- coderversion1
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Modifier, incorrect comparison.
A. incorrectly compares 'earlier works on slavery to 'Blassingame'.
B. it's not clear what 'that' refers to making the comparison vague and unclear.
C. earlier works on slavery is compared to Blassingame who is not a work but a person.
D. earlier works on slavery compared to Blassingame's innovative study. CORRECT
E. earlier works on slavery is compared to Blassingame who is not a work but a person.
A. incorrectly compares 'earlier works on slavery to 'Blassingame'.
B. it's not clear what 'that' refers to making the comparison vague and unclear.
C. earlier works on slavery is compared to Blassingame who is not a work but a person.
D. earlier works on slavery compared to Blassingame's innovative study. CORRECT
E. earlier works on slavery is compared to Blassingame who is not a work but a person.












