The mathematical insights made by Paul Dirac were essential
to his productive collaboration with Edwin Schrodinger, with whom they shared a Nobel prize in 1933, and to his own successful efforts to apply the special theory of relativity to the quantum mechanics of the electron.
A to his productive collaboration with Edwin Schrodinger, with whom
they shared a Nobel prize in 1933, and to
Use of THEY is incorrect since such use means that there was someone else, apart from Paul and Edwin, who shared a Nobel Prize, an idea contrary to original intent that Paul shared Nobel prize with Edwin. B to his productive collaboration with Edwin Schrodinger, with whom Dirac shared a Nobel prize in 1933, and to
CorrectC to his productive collaboration with Edwin Schrodinger, with whom
both men shared a Nobel prize in 1933, and to
Use of BOTH is incorrect on the lines as explained in option A. D
towards his productive collaboration with Edwin Schrodinger, with whom Dirac shared a Nobel prize in 1933, and to
ESSENTIAL TO is correct use. E
in his productive collaboration with Edwin Schrodinger, with whom Dirac
shares a Nobel prize in 1933, and
inESSENTIAL TO is correct use.
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76% (01:14) correct 
