If real GDP ________ aggregate planned expenditure, then as a result firms ________ production

The study of how people choose among the alternatives available to them is the:

A) definition of economics. B) model of demand. C) theory of opportunity costs. D) method of distinguishing between microeconomics and macroeconomics.

The amount of corruption that occurs in a government is hard to measure because:

A. its costs are mostly indirect and nearly impossible to measure. B. it is illegal, and therefore hidden. C. the benefits subtracted from the costs often go to a small number of people and distort the reality. D. All of these are true.