Which Invertebrate Species Has Exactly 302 Neurons

Question

Which invertebrate species has exactly 302 neurons?
A)Caenorhabditis elegans
B)planarian
C)echinoderm
D)cnidarian
E)Chironex fleckeri

Accepted Answer

Caenorhabditis elegans, a small nematode, is the only invertebrate species known to have exactly 302 neurons.