❓ 質問 According to the passage, what is a major reason why ecosystem services are often undervalued in economic markets?
- A. A. They are typically provided in such abundance that they have no scarcity value.
- B. B. Their characteristics as public goods prevent their true value from being captured by prices.
- C. C. Most ecosystem services are not yet scientifically understood well enough to be quantified.
- D. D. Governments impose strict regulations that artificially lower the market price of these services.