❓ 質問 According to the passage, why do critics argue against formally designating the Anthropocene as a geological epoch?
- A. A) Human markers lack the durability of natural stratigraphic boundaries.
- B. B) The Industrial Revolution is a more appropriate starting point than the mid-20th century.
- C. C) Radioactive isotopes are not found in natural sediments.
- D. D) The term 'Anthropocene' is too recent to be used in scientific literature.