They think that people started as a fish and there was a resolution into a bigger fish then into a land creature then into a monkey then into a man. They think that the earth was a little rock at the beginning but then other rocks joined it and it became 1 big planet. But this is just what they think.
Answer:
The correct answer is A. Cells are the basic unit of life.
It has to be confirmed through scientific tests in a lab.
