Economist: In the interaction between producers and consumers, the only obligation that all parties have is to act in the best interests of their own side. And distribution of information about product defects is in the best interests of the consumer. So consumers are while producers are never obligated to reveal them.
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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