Which type of organism most likely evolved first?

A. Simple prokaryotes

B. Simple eukaryotes

C. Archaea with simple DNA

D. Multicellular prokaryotes

Option A) Simple Prokaryotes.

Explanation:

The first life that existed on Earth was the single-celled microbes who lack a well defined nucleus and are known as Prokaryotes They existed on Earth for almost four billion years ago. In Prokaryotes "Pro" means before and "Karyon" means nucleus which means they lacked nucleus and many other cell organelles that complex structures have. They are single celled organism adaptive of living in earth older environment.

Result: Simple Prokaryotes was the first life on earth.