If consumers view the output of any firm in a market to be identical to the output of any other firm in the market, the demand curve for the output of any given firm A. will be identical to the market demand curve. B. will be horizontal. C. will be vertical. D. cannot be determined from the information given.

The goal of an economist who formulates new theories is to a. provide an interesting framework of analysis, whether or not the framework turns out to be of much use in understanding how the world works. b. provoke stimulating debate in scientific journals. c. contribute to an understanding of how the world works. d. demonstrate that economists, like other scientists, can formulate testable theories.