the original seems to be correct.

IMO A

For this question we are looking for parallelism: 'judged not by A but by B'

Gianlorenzo Bernini should be judged not by the degree to which his sculptures and architecture are admired throughout the world, but by his Bacchanalian lifestyle, his notorious temper, and his scathing jealousy of his counterparts.

A - be judged not by the degree to which his sculptures and architecture are admired throughout the world, but by ANSWER
B - not be judged by the degree of admiration the world has for his sculptures and architecture, and instead by
C - be judged to the degree that his sculptures and architecture are admired throughout the world, and not by
D - not be judged by the degree to which the world admires his sculptures and architecture, but instead
E - be judged to the degree of admiration which the world has for his sculptures and architecture, not by

IMO - A