The window of opportunity, during which life in the form of the first cell could have begun, was approximately how long ago?

The window of opportunity, during which life in the form of the first cell could have begun, was approximately how long ago?

The window of opportunity, during which life in the form of the first cell could have begun, was approximately how long ago?




a) 4 billion years ago
b) 4 million years ago
c) 100,000 years ago
d) 65 million years ago
e) 1 million years ago






Answer: A