❓ 题目 According to paragraph, which of the following best describes the main reason for the debate over formalizing the Anthropocene?
- A. A. Scientists disagree on whether human activities have caused any lasting geological changes.
- B. B. There is no clear evidence of human impact before the mid-20th century.
- C. C. Disagreement exists about whether the geological markers of human impact are sufficient and whether a single boundary is appropriate.
- D. D. The term was popularized by a non-geologist, making it scientifically invalid.