Physical or technological facts are by themselves never sufficient to measure efficiency because
A) what is efficient changes over time.
B) efficiency is a ratio between evaluations.
C) more complex technological processes are inevitably more efficient.
D) physical or technological data can never be known precisely.
E) we can never be sure we are using the most advanced technology.
Question 2
The above figure shows the U.S. market for flip-flops. With international trade, the equilibrium price in the United States is ________ and the United States ________ flip-flops.
A) 12; imports
B) 12; does not trade
C) 12; exports
D) 14; imports
E) 14; does not trade
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