Select the vertebrate.

 - bull ant
 - flower hat jellyfish
 - black orb weaver spider
 - box turtle
A bull ant is an insect. Like other insects, a bull ant is an invertebrate. It does not have a backbone. It has an exoskeleton.
Like other spiders, a black orb weaver spider is an invertebrate. It does not have a backbone. It has an exoskeleton.
A box turtle is a reptile. Like other reptiles, a box turtle is a vertebrate. It has a backbone.
Like other jellyfishes, a flower hat jellyfish is an invertebrate. It does not have a backbone. It has a soft body.