Answer: Precambrian
Precambrian geologic time span covers the majority of Earth’s history.
Explanation:
As by the explanation it is said that Precambrian has the approximate percent of the geologic time which is of ninety percentages.
It does covers and extends from 4.6 billion years ago which was taken all the way to the Cambrian period which was believed to be 541 Ma.
And in the following it did consist of three of the eons and their names were Hadean, Archean, and Proterozoic.