Even the most ____ of critics could not deny the sheer _____ of the performance, a dazzling display of virtuosity that left the audience spellbound.

✓ Correct Answer: Option C

The first blank describes a type of critic who would normally find fault, unable to deny the performance's quality ('dazzling display of virtuosity'). 'Jaundiced' (prejudiced; cynical) fits the critic, while 'brilliance' fits the performance's quality.