Answer: Option D
Step-by-step explanation:
Prokaryotes are single celled organism. They do not have membrane bound organelles. They have their nucleus dissolved in the cytoplasm.
The most primitive organism are prokaryotes as they do not have membrane bound organelles in it it has a smaller size as compared to that of eukaryotes.
Eukaryotes are advanced type of organism that is multicellular and have distinct organelles.