Sentence Correction (SC) | An exceptional student who mastered calculus at age six and

An exceptional student who mastered calculus at age six and studied particle physics at age ten,Nora Brodkey's astute scientific mind was vital to the creation of quontronics in the 1970s, when she discovered the fluctuating waves present in deepspace.

An exceptional student is noun phrase so we should expect noun that answers"who is an exceptional student ". Therefore A, B and E out.

Consider option D, adjectivevital is in awkward position since " ..., Nora Brodkey was the astute
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