Why do think the snake and the starfish are not in the same class as the other animals

Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea. Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars. Starfish are also known as Asteroids due to being in the class Asteroidea. About 1,500 species of starfish occur on the seabed in all the world's oceans, from the tropics to frigid polar waters. They are found from the intertidal zone down to abyssal depths, 6,000 m (20,000 ft) below the surface.

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pls mark me as brainliest

i don't know. if i were you, i would search it up online : d

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .