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21 Jul 2022, 02:04
Kudos
Bookmarks
Modern optical telescopes can detect stars at great distances; however, they cannot detect black holes, because light particles are unable to escape from them because of their strong gravitational fields, making them invisible to the telescopes.
A. however, they cannot detect black holes, because light particles are unable to escape from them because of their strong gravitational fields, making them
them should refer to blackholes, however the in this context it refers to telescope
B. black holes, however, are undetectable to these telescopes, because their gravitational fields are so strong that light particles are unable to escape from them, making them
Correct
C. however, these telescopes cannot detect black holes, because light particles are unable to escape from them due to their strong gravitational fields and thus
Incorrect parallel structure
D. these telescopes, however, cannot detect black holes, because light particles are unable to escape from them due to their strong gravitational fields and making them
Incorrect parallel structure
E. they, however, cannot detect black holes, because their gravitational fields are so strong that light particles are unable to escape from them, making them
Ambiguous reference
IMO B
A. however, they cannot detect black holes, because light particles are unable to escape from them because of their strong gravitational fields, making them
them should refer to blackholes, however the in this context it refers to telescope
B. black holes, however, are undetectable to these telescopes, because their gravitational fields are so strong that light particles are unable to escape from them, making them
Correct
C. however, these telescopes cannot detect black holes, because light particles are unable to escape from them due to their strong gravitational fields and thus
Incorrect parallel structure
D. these telescopes, however, cannot detect black holes, because light particles are unable to escape from them due to their strong gravitational fields and making them
Incorrect parallel structure
E. they, however, cannot detect black holes, because their gravitational fields are so strong that light particles are unable to escape from them, making them
Ambiguous reference
IMO B
21 Jul 2022, 02:09
Kudos
Bookmarks
Split 1: due to vs because of
"due to" is used to modify noun, whereas "because of" is used to modify verb/entire clause.
In C and D, "light particles are unable to escape from them" is an entire clause, so use of "due to" is incorrect. Hence, C and D are out.
Split 2: Pronouns
In A and E, "they" refers back to the main subject of the previous independent clause "modern optical telescopes", so does "them" and "their". However, logical referent of "them" and "their" should be black holes. Hence, A and E are out.
Answer is B because the subject of "them" and "their" is now black holes and the sentence is clear as written.
"due to" is used to modify noun, whereas "because of" is used to modify verb/entire clause.
In C and D, "light particles are unable to escape from them" is an entire clause, so use of "due to" is incorrect. Hence, C and D are out.
Split 2: Pronouns
In A and E, "they" refers back to the main subject of the previous independent clause "modern optical telescopes", so does "them" and "their". However, logical referent of "them" and "their" should be black holes. Hence, A and E are out.
Answer is B because the subject of "them" and "their" is now black holes and the sentence is clear as written.
21 Jul 2022, 02:34
Kudos
Bookmarks
Modern optical telescopes can detect stars at great distances; however, they cannot detect black holes, because light particles are unable to escape from them because of their strong gravitational fields, making them invisible to the telescopes.
A. however, they cannot detect black holes, because light particles are unable to escape from them because of their strong gravitational fields, making them
--> Incorrect: 'them' here can incorrectly be inferred to refer 'telescoped' as it does not have clear reference to black holes
B. black holes, however, are undetectable to these telescopes, because their gravitational fields are so strong that light particles are unable to escape from them, making them
--> Correct: ' black holes' is structured as subject in this part of the sentence, hence 'their' and 'them' would be inferred to refer 'black holes'.
C. however, these telescopes cannot detect black holes, because light particles are unable to escape from them due to their strong gravitational fields and thus
--> Incorrect: subject in this part of sentence is 'telescopes', hence 'them' would incorrectly refer to telescopes
D. these telescopes, however, cannot detect black holes, because light particles are unable to escape from them due to their strong gravitational fields and making them
--> Incorrect: subject in this part of sentence is 'telescopes', hence 'them' would incorrectly refer to telescopes
E. they, however, cannot detect black holes, because their gravitational fields are so strong that light particles are unable to escape from them, making them
--> Incorrect: 'their' could be wrongly considered to imply same noun as 'they' which is 'telescopes'
A. however, they cannot detect black holes, because light particles are unable to escape from them because of their strong gravitational fields, making them
--> Incorrect: 'them' here can incorrectly be inferred to refer 'telescoped' as it does not have clear reference to black holes
B. black holes, however, are undetectable to these telescopes, because their gravitational fields are so strong that light particles are unable to escape from them, making them
--> Correct: ' black holes' is structured as subject in this part of the sentence, hence 'their' and 'them' would be inferred to refer 'black holes'.
C. however, these telescopes cannot detect black holes, because light particles are unable to escape from them due to their strong gravitational fields and thus
--> Incorrect: subject in this part of sentence is 'telescopes', hence 'them' would incorrectly refer to telescopes
D. these telescopes, however, cannot detect black holes, because light particles are unable to escape from them due to their strong gravitational fields and making them
--> Incorrect: subject in this part of sentence is 'telescopes', hence 'them' would incorrectly refer to telescopes
E. they, however, cannot detect black holes, because their gravitational fields are so strong that light particles are unable to escape from them, making them
--> Incorrect: 'their' could be wrongly considered to imply same noun as 'they' which is 'telescopes'
