❓ Câu hỏi According to the passage, what is a major reason why ecosystem services are often undervalued in market systems?
- A. A. They are primarily cultural and therefore difficult to quantify.
- B. B. They possess characteristics of public goods, leading to market failure.
- C. C. Environmental policies have only recently begun to consider them.
- D. D. Stated-preference methods are too expensive to implement widely.