Which of the following is the primary characteristic of organisms in the kingdom Protista?

A. Prokaryotic and unicellular
B. Eukaryotic and unicellular
C. Prokaryotic and multicellular
D. Eukaryotic and multicellular

Answer: Eukaryotic and unicellular


Additional Information: Protists are primarily unicellular eukaryotic organisms, such as amoeba and paramecium.