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❓ 题目 What is the author's primary purpose in discussing the limitations of contingent valuation?

A. To argue that ecosystem services should not be valued in monetary terms
B. To show that despite criticisms, valuation remains a useful practical instrument
C. To prove that land-use decisions are rarely influenced by economic analyses
D. To suggest that surveys are the most accurate method for valuing nature

To show that despite criticisms, valuation remains a useful practical instrument