The statement that best distinguishes a bacterial cell from eukaryotes is:
DNA in the bacterial cell is always in contact with the cytoplasm, and all eukaryotes have DNA located inside a nucleus.
This statement highlights a key difference between prokaryotic cells (like bacteria) and eukaryotic cells. In prokaryotes, the DNA is located in the cytoplasm since they lack a defined nucleus, while in eukaryotes, the DNA is enclosed within a membrane-bound nucleus.
The other options are either incorrect or misleading regarding the distinctions between bacterial and eukaryotic cells. For example, not all eukaryotes are multicellular; many eukaryotes are unicellular (like yeast). Additionally, both bacterial and eukaryotic cells have ribosomes, and both may have cell membranes and cell walls, though the structure and composition of the walls can differ.