Answer:
C.
Step-by-step explanation:
All invertebrates are animals, and all animals are multicellular, so all inverteberates are multicellular. They are not prokaryotic because all animals have eukaryotic cells, like humans. They are also not all covered by an outer skeleton like worms for instance. They are also not all bilaterally symmetrical. One animal that is not bilaterally symmetrical is the fiddler crab.