Respuesta :
Answer: Option D
Explanation:
The early earth conditions were different from the conditions that exists today. Too much of oxygen in the atmosphere hinders the formation of cells.
Many experiments were performed to form organic compounds but none of them helped to form cells.
This is because after the formation of organic molecule, it took time for the formation of cells. There is no such experiment that can be performed for such a longer duration of time, so cells cannot be formed.