C. The cells that make them up each contain genetic information.
Explanation:
A and B are not the answer because prokaryotes are unicellular organisms while eukaryotes are multicellular organisms. D is not the answer because prokaryotes do not have a nucleus, leaving the DNA floating in the cytoplasm.
The correct answer is C. It is not A and B because prokaryotic cells (bacteria cells, etc) are unicellular, and eukaryotes (animal and plant cells) are multi cellular. And it is not D because prokaryotic cells do not have a nucleus. So you are left with C.
