Respuesta :

Answer: amphibians

Explanation:

earthworms, grasshopper, lancelets, octopus, crab, tunicates, starfish are all invertebrates.

lancelets(cephalochordata) and tunicates(urochordata) are chordates but do not have a backbone.

emilyblumenhein

Hii!! The correct answer is amphibians. (:

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good job