5. Which of the following levels is the most inclusive, largest, and least specific of the choices? A. Family B. Phylum C. Species D. Class

First we can look at the taxonomic order:

Domain

Kingdom

Phylum

Class

Order

Family

Genus

Species

The largest level would be the one closest to the top of the list because it is the least specific and therefore the most inclusive. Out of the choices given, phylum is closest to the top, so that is the answer.