Answer:
Answer in explanation below!
Step-by-step explanation:
Box 1 : Eukarya - this is the domain of organisms that have cells enclosed within a nuclear envelope
Box 2: Protista - any eukaryotic organism that is not an animal, plant or fungus
Box 3: Fungi - they can be single celled ( unicellular ) or multicellular
Box 4: Eubacteria - they are prokaryotic microorganisms
I hope this helps, good luck!