The rhetorical device employed by Sonia Sotomayor in the passage to show that there is a need for more equality in the judicial systems is irony. (option B)
What is irony?
We say an author is using irony when she employs words in way that gives them the opposite meaning of what they normally have. That is what we have in "dubious distinction" in the passage.
The phrase "dubious distinction" is known for being an ironic way to talk about something bad as if it were something good. Sotomayor uses that phrase to emphasize the lack of equality in Judge Paez's case, but ironically calling it a distinction, comparing it to an achievement.
With the information above in mind, we can select option B as the correct answer.
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