What Is Contingent Valuation

What is contingent valuation?

A) assigning a value to an intangible good based on the results of surveys
B) assigning a value to an intangible good based on how much people will pay to obtain it
C) assigning a value to an intangible good based on its historical price
D) assigning a value to an intangible good based on its price in an ideal free market
E) assigning a value to an intangible good based on what it would cost to provide a substitute for it