Answer the following question given this paragraph: 

All vertebrate organisms are in the phylum Chordata. Invertebrates, which make up about 95% (or more) of the animal kingdom, are divided into over 30 different phyla, some of which are listed below ( Table below ). Numerous invertebrate phyla have just a few species; some have only one described species, yet these are classified into separate phyla because of their unique characteristics. For example, sponges, with pores throughout their body, are from the phylum Porifera. Crabs and lobsters, with jointed appendages, are from the phylum Arthropoda.


Q: Which phylum are all vertebrate organisms a member of?

 Choices:

- pylum protozoa

- phylum hominid

- phylum arthropod

- phylum chordata

A:
phylum chordata
