Question

what is the most logical conclusion that can be drawn from the information used to create the geologic time scale?
human history is extremely short compared to the vastness of earths history.
the earth has stopped changing and its history is complete.
rock and fossil evidence is no longer useful for studying the past.
humans have existed through most of the major divisions of the time scale.

Explanation:

The geologic time scale spans over 4.5 billion years of Earth's history, while human history (including early hominids) only makes up a tiny fraction of the most recent division (the Cenozoic Era, specifically the Quaternary period). The other options are incorrect: Earth continues to change geologically, rock/fossil evidence is critical for studying Earth's past, and humans have not existed through most of the geologic time scale.

Answer:

A. Human history is extremely short compared to the vastness of Earth’s history.