- An animal is a kind of organism
- Animals are a part of the biological kingdom animalia
- Therefore, animals are kinds of organisms that are part of the biological kingdom animalia

- Animals are kinds of organisms that are part of the biological kingdom animalia
- An animal is a kind of eukaryote
- Therefore, the organisms in the kingdom animalia are eukaryotes

- The organisms in the kingdom animalia are eukaryotes
- Eukaryotes are a part of the biological domain eukaryota
- Therefore, the organisms in the kingdom animalia belong to the domain eukaryota

Therefore, the organisms in the kingdom animalia belong to the domain eukaryota
Question
All organisms classified in kingdom Animalia must also be classified as which of the following?

Context
- An animal is a kind of eukaryote 
- An animal is a kind of organism 
- Eukaryotes are a part of the biological domain eukaryota 
- Animals are a part of the biological kingdom animalia