Q: Vertebrates. from the smallest of fish to us. one of the main features we all have in common is our what?


Read this paragraph and choose the correct option from the provided answers:

Vertebrates. From the smallest of fish to us. One of the main features we all have in common is our backbone. Vertebrates describes main biological features of fish, amphibians, reptiles, birds, and mammals.

 Choices:

- hair

- warm blood

- laying eggs

- backbone


A:
backbone