Although his early critics had viewed Christopher Marlowe as a talented and brilliant writer and had often compared his plays to those of Shakespeare, until almost 1950, modern critics and biographers did not begin seriously to consider the literary merits of his works.
(A) until almost
1950, modern critics and biographers did not begin seriously to consider. > Although is used therefore Contrast needed ie not until that
(B) not until almost 1950 were modern critics and biographers to begin seriously to consider
> awkward usage
(C) it was not until almost 1950 that modern critics and biographers seriously began considering. Bingo...!!! Everything is at place.
(D) until almost 1950 modern critics and biographers had not begun
seriously considering > Although is used therefore Contrast needed ie not until that
(E) it was not almost until
modern critics and biographers began to seriously consider. > Until then less preferred over until that in this sentence because if the meaning conveyed(ALSO QUESTION SAYS SERIOUSLY BEGAN TO CONSIDER NOT BEGIN TO SERIOUSLY CONSIDER) this is my view
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Manhattan 1 > 680
Manhattan 2 > 650
Gmat prep 1 > 650
Gmat prep 2 > 720
> I CAN, I WILL <