Editorialist: To ensure justice in the legal system, citizens must be capable of criticizing anyone involved in determining the punishment of criminals. But when the legal system’s purpose is seen as deterrence, the system falls into the hands of experts whose specialty is to assess how potential lawbreakers are affected by the matters, justice is not then ensured in the legal system.
What this question is testing
Your task
Find the assumption the argument requires in order for its conclusion to hold.
Common trap
Answers that would help the argument but aren't strictly required (sufficient, not necessary).
Winning move
Negate each choice — the right one breaks the argument when negated.
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