❓ Question According to the passage, which of the following is a reason why some geologists oppose the formal designation of the Anthropocene?
- A. The changes caused by humans are not yet visible in any geological records.
- B. The timeframe of the changes is too short to be clearly preserved in sedimentary strata.
- C. The term 'Anthropocene' is purely metaphorical and lacks scientific basis.
- D. The concept was proposed by an environmental activist rather than a geologist.