❓ 質問 According to the passage, which of the following is a primary reason why some geologists oppose formally defining the Anthropocene as an epoch?
- A. A. Human impacts like deforestation occurred at different times around the world, preventing a single global marker.
- B. B. The mid-20th century does not show any clear evidence of nuclear fallout in geological strata.
- C. C. The concept of the Anthropocene is not useful for understanding human impact on Earth.
- D. D. Plastic pollution and elevated carbon dioxide levels are not considered significant geological markers.