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Edgar Allan Poe,___, was more appreciated and influential in France than
in the United States.
(A)who was a poet and short story writer
(B)a poet and short story writer
The answer is B. What's wrong with choice A?
Comments  
Grammatically, there is nothing wrong with choice A.
It just happens to be a bit wordy and therefore tiresome stylistically.

CJ
TeoEdgar Allan Poe,___, was more appreciated and influential in France than
in the United States.
(A)who was a poet and short story writer
(B)a poet and short story writer
The answer is B. What's wrong with choice A?
I've never seen such a construction. What do the "who" refer to?
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CalifJimGrammatically, there is nothing wrong with choice A.
It just happens to be a bit wordy and therefore tiresome stylistically.

CJ

Clive, it is not an English construction.
Milky
TeoEdgar Allan Poe,___, was more appreciated and influential in France than
in the United States.
(A)who was a poet and short story writer
(B)a poet and short story writer
The answer is B. What's wrong with choice A?
I've never seen such a construction. What do the "who" refer to?

Well, to Edgar Allan Poe...
1. Edgar Allan Poe, who was a poet and short story writer, was more appreciated and influential in France than in the United States.

It looks fine to me too; though as CJ says, a little wordy. But no doubt there are contrastive contexts where you might want to spell it out.

MrP
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Hi Milky,

Clive, it is not an English construction.

How did I get involved in this thread? However, since I'm here, I agree with those who have pointed out that it's a valid thing.

Clive
I agree. It sounds more like the spoken version - I can hear it as an aside - but it is perfectly valid.