❓ 質問 According to the passage, why are regulating and supporting services often undervalued in economic decisions?
- A. A) They are less important than provisioning services for human survival.
- B. B) Their benefits are not easily quantified because they are diffuse and long-term.
- C. C) They are not directly provided by natural ecosystems.
- D. D) They have been fully accounted for in market prices.