Answer: A . prokaryotic
Step-by-step explanation:
Bacteria are prokaryotic microorganisms that are single-celled and lack a true nucleus and other membrane-bound organelles. Prokaryotic cells are simpler in structure than eukaryotic cells, which are found in plants, animals, and fungi, and have a true nucleus and membrane-bound organelles.
Bacteria are not multi-cellular, and they do not have complex organelles.