Most invertebrates have a nervous system.
Invertebrates are animals without a backbone.
Most animals without backbones have a nervous system.
Which type of system do most animals without backbones have?

[A] sensory neurons
[B] Veins and arteries.
[C] Nervous system
[D] Stereo system
[E] Root system
[F] to move people
[G] Skeletal system
[H] insects