Answer the following question given this paragraph: 

The Animal Kingdom is one of four kingdoms in the Eukarya Domain. The Animal Kingdom, in turn, is divided into almost 40 modern phyla. The Animal Kingdom can also be divided into two basic groups: invertebrates and vertebrates. Most animal species are invertebrates, which lack a backbone.


Q: The animal kingdom can also be divided into two basic groups, what are they?

 Choices:

- mammals and fish

- aquatic and land

- sponges and vertebrates

- invertebrates and vertebrates

A:
invertebrates and vertebrates
