Which geologic period lasted for almost 7/8 of earth's history?

A. the Precambrian time

B. the Phanerozoic Eon

C. the Carboniferous Period

D. the Quaternary Period

I think the correct answer from the choices listed above is option A. The geologic period which lasted for almost 7/8 of earth’s history would be the Precambrian time. This period covers about 90% of the entire history of the Earth. It happened about 4.6 billion years ago. Hope this answers the question.

A. the Precambrian time