❓ 문제 According to the passage, what is one reason critics oppose formally recognizing the Anthropocene as a geological epoch?
- A. A. The proposed markers, such as radioactive isotopes, are not found in ice cores.
- B. B. Human impacts have been gradual and vary by region, making a single start date questionable.
- C. C. The term was invented by artists and has no basis in scientific research.
- D. D. The markers are too old to be preserved in the geological record.