Answer the following question given this paragraph: 

Like fish, amphibians are ectothermic vertebrates. They belong to the class Amphibia. There are three orders:.


Q: Which kind of vertebrates are amphibians?

 Choices:

- endothermic vertebrates

- enterococci vertebrates

- arachnids vertebrates

- ectothermic vertebrates

A:
ectothermic vertebrates
