Which version of the origin of species?

[Minimalist]

"I only have a few questions like why cingle celled organisms evolved."


First of all, Darwin was studying the origin of "species" not the origin of life. When commenting on his finches he did not find it necessary to trace them back to a single celled organism.

It sounds more like you are asking about abiogenesis which is still a matter of scientific investigation.

It is fairly safe to say that there was no invisible man in the sky making single-celled organisms. That is purely human invention.