Answer: The correct answer is "C. produce because revenue of $1 comma 000 is greater than fixed costs.".
Explanation: The firm should produce because the revenue of 1000 is enough to cover the fixed costs and part of the variables (1000 - 800 - 600 = (-400)) so that the loss is less than if it stopped producing despite the avoidable costs (800 - 350 = 450) since if it stopped producing it would have a loss of $ 450 and producing it would have a loss of $ 400.