Archaea and Eukarya Bacteria and Eukarya Archaea and Bacteria Archaea, Bacteria, and Eukarya
I gave my students this multiple choice question: Single-celled organisms that cause disease can be found in which domains?

Only one answer is correct among these 4 choices:
- Archaea and Eukarya
- Bacteria and Eukarya
- Archaea and Bacteria
- Archaea, Bacteria, and Eukarya

Could you tell me which one is correct?

Bacteria and Eukarya