Which of the following taxonomic categories contains all the others listed here?

order

genus

species

family

class

The correct answer is class.

Taxonomic category (rank) is the level of a group of organisms in a taxonomic hierarchy. The major ranks are domain, kingdom, phylum, class, order, family, genus, and species. Higher rank has more general characteristics of organisms. The lowest rank-species contains most specific descriptions of life forms in it.