Jill, an economics student, has already spent 5 hours cleaning her room. In deciding whether or not to continue cleaning for another hour, she applies the economic principle of

Question

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Jill is considering the additional benefits and costs of spending one more hour cleaning her room, which is an application of the principle of choosing at the margin. This principle involves making decisions based on the additional benefit (marginal benefit) and additional cost (marginal cost) of that decision.

Jill, an Economics Student, Has Already Spent 5 Hours Cleaning