Which of the following parts of geologic time is the shortest?

A) Precambrian
B) Paleozoic
C) Mesozoic
D) Cenozoic

Precambrian

denotes the vast period of time before the Cambrian period, covering the formation of the Earth until about 541 million years ago.

Paleozoic

An era of geological time from about 541 to 252 million years ago, marked by the development of early life forms to the advent of reptiles and the end of the Permian period.

Mesozoic

An era of geological time from about 252 to 66 million years ago, known as the "Age of Reptiles" and marked by the dominance of dinosaurs.