Answer:
Order
Step-by-step explanation:
This classification system is used for taxonomy, when you classify living things, including plants, animals, bacteria, etc...
The order from most general ("biggest") to most specific ("smallest") is:
Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
We use the genus and species for scientific names. When we talk normally, we use the common name.
For example, people like you, me, and your teachers, use the common name "(modern) humans". The scientific name for people is "homo sapiens".
The taxonomy for modern humans is:
Eukarya animalia chordata mammalia primates hominidae homo sapiens