Life may have existed as long ago as

A) 4.8 billion years ago.
B) 4.56 billion years ago.
C) 4.4 billion years ago.
D) 4.1 billion years ago.

Billion Years Ago

A timeframe referring to events that occurred approximately one billion years or more in the Earth's past.

Life

The condition that distinguishes animals and plants from inorganic matter, including the capacity for growth, reproduction, functional activity, and continual change preceding death.

Existed

To have been present or alive at some point in time or history.