They are classified as Invertebrates.
Answer choice B. Invertebrates is correct.
Also here is a bit more information which is a list of invertebrate species..
<span>1. Clams,
</span>2. Squids,<span>
3. Crustaceans,
4. Arthropods,
</span><span>5. Insects,
</span><span>6. Worms,
7. Jellyfish,
</span>
I hope this helps!
Yes, in the first stage. Prophase I