Чтение TOEFL

❓ Вопрос According to the passage, what is a primary reason why the Anthropocene lacks a clear geological boundary?

A. A) Because human impacts have been too uniform and consistent over time.
B. B) Because its proposed markers, such as nuclear fallout, are not found in all regions.
C. C) Because early agriculture was more significant than modern industrialization.
D. D) Because scientists agree that the epoch should begin millions of years ago.

B) Because its proposed markers, such as nuclear fallout, are not found in all regions.