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Why People Trade
Question 1 of 7
Multiple choice
Amir trades his apple to Rosa for her pretzels, and both walk away pleased. How, when no new food appeared?
One of them made a mistake and has not noticed
Rosa must have given up something extra to make it fair
Trades always have a winner and a loser, so one of them lost
Each wanted the other person's item more, so the swap made both better off
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