Critic: Almost all of the paintings from our cityʼs art movement share two characteristics: bold brushwork and a sharp contrast of light and shadow. The only ones that do not share these characteristics are abstract paintings, which—because they are nonrepresentational—do not depict light or shadow. However, the most famous painting from our brushwork, it does not exhibit a sharp contrast of light and shadow.
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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