To be a natural monopoly a firm must

A) have significant network externalities.
B) control a key resource input.
C) have economies of scale that are so large that it can supply the entire market at a lower cost than two or more firms.
D) be in a government-regulated market.

C

Economics

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An aggregate demand curve can be drawn by: a. shifting the 45-degree line

b. letting changes in autonomous spending shift the aggregate expenditure line. c. letting changes in the price level shift the aggregate expenditure line. d. letting changes in the level of income shift the aggregate expenditure line. e. letting changes in real GDP shift the aggregate expenditure line.

Economics

For a person earning $75,000, the marginal tax amount from 10,001 to $15,000 is:


A. $500
B. $750
C. $1,750
D. $2,000

Economics