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A key assumption of the supply and demand model is that: firms will continue to raise prices until profits become positive. each firm produces at a level of output at which price exceeds marginal cost. each firm's good is unique and cannot be duplicated by other firms in the market. each firm in the market produces an identical good.

Respuesta :

Answer:

each firm in the market produces an identical good.

Explanation:

In the case of the supply and demand model there is a key assumption that tells that each & every firm in the market would generate or produce the same kind of good as it produced homogenous product instead producing different kind of goods

So according to the given situation the last option is correct

ANd the rest of the options would be wrong

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