❓ 题目 According to the passage, why do proponents of the mid-20th century as the start of the Anthropocene favor this marker?
- A. It coincides with the beginning of the Industrial Revolution.
- B. It provides clear and globally synchronous stratigraphic evidence, such as nuclear fallout.
- C. It marks the first significant human alteration of the environment.
- D. It was agreed upon by a unanimous vote among geologists.