When an average total cost pricing rule is enforced, average total cost equals ________

Economic bads are items

A) for which the produced quantity is less than the amount desired at a positive price. B) for which the desired quantity is less than what nature provides at a zero price. C) that individuals desire but which receive social disapproval. D) that receive social approval but which governments dislike.

Which branch of economics is most likely to study differences in countries' growth rates?

A. microeconomics B. normative economics C. experimental economics D. macroeconomics