Official Solution:Because he had not experienced any symptoms until adulthood and was affected by facial paralysis early on in the course of his illness, Franklin Delano Roosevelt, whose death was originally attributed to complications arising from polio, may actually have suffered from symptoms related to Guillain-Barre syndrome.A. Because he had not experienced any symptoms until adulthood and was affected by facial paralysis early on in the course of his illness
B. Since he has experienced his symptoms in adulthood and has been affected by facial paralysis early on in the course of his illness
C. Early on in the course of his illness he experienced facial paralysis and having not experienced any symptoms until adulthood
D. Because he had not experienced any symptoms until adulthood, he had been affected by facial paralysis early on in the course of his illness
E. Since he did not experience any symptoms until adulthood and had been affected by facial paralysis early on in the course of his illness
The sentence is correct as it is written. The first event that occurred, indicated by the past perfect, was that Roosevelt
had not experienced symptoms until adulthood. It is logical that, after he experienced a symptom in the past, he
was affected by facial paralysis. This clause logically modifies
Franklin Delano Roosevelt and explains why he
may actually ("actually" indicates that a contrast exists between what the death was originally attributed to and the reason described in the beginning of the sentence for a change in this belief)
have suffered from a certain disease. The correct answer is
A.
The other options introduce errors.
Choice B uses the present perfect, indicating that an event began in the past and is ongoing. Roosevelt is dead, and this option is thus illogical.
Choice C:
he experienced and
having not experienced are not parallel. This option fails to relate the beginning of the sentence to the end, why Roosevelt
may actually have suffered from...
Guillain-Barre syndrome.
Choice D connects two independent clauses with a comma only:
He had been affected and
Roosevelt may actually have suffered are main subjects and verbs within clauses that can stand on their own as complete sentences.
Choice E introduces a new tense error; it is illogical that Roosevelt
had been affected by a symptom
before he
experienced any symptoms.
Answer: A