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❓ 题目 According to the passage, which of the following is a reason why some geologists oppose formalizing the Anthropocene as a geological epoch?

A. A) The term has been co-opted by political activists, making it unscientific.
B. B) Human impacts, such as agriculture, have occurred gradually over a long period, lacking a single clear global marker.
C. C) The Great Acceleration only affected a few regions, not the entire globe.
D. D) The proposed markers, like nuclear fallout, are not durable enough to appear in rock layers.

B) Human impacts, such as agriculture, have occurred gradually over a long period, lacking a single clear global marker.