Based on the fossil record, the one that indicate that it's the first organism is : D. Prokaryotes Prokaryotes tend to be only consist of 1 single cells and do not have nucleus, which mean that the cell still hasn't got a complex function
The word pro means "before". They are usually unicellular organisms and sometimes multicellular. The first living organisms found on earth are supposed to be prokaryotes. They are divided into two species of bacteria Archae and bacteria. They lack membrane bound organelles and all the water soluble components are present without membrane in the cytoplasm. They have primitive features hence a fossil found indicates towards prokaryotes.
