What are protists? a) prokaryotes that are part of domain archaea. b) eukaryotes that are not part of the plant, animal or fungi kingdoms.. c) single-celled organisms that belong to the plant, animal, and fungi kingdoms.. d) single-celled eukaryotes that are part of the plant and fungi kingdoms..

The correct answer that fits the definition of what protists are is option B. Protists are eukaryotes that are not part of the plant, animal or fungi kingdoms. These are a group of organisms which includes a diverse eukaryotes that do not form a natural group. Examples of protists include algae and invertebrates. 

Hope the answer is b