The simplest of the eukaryotes are the ____.

A) protists
B) plants
C) fungi
D) animals
E) Archaea

Eukaryotes

Organisms whose cells contain a nucleus and other organelles enclosed within membranes, contrasting with prokaryotes, which lack a membrane-bound nucleus.

Protists

A diverse group of eukaryotic microorganisms, which are not plants, animals, or fungi, ranging from amoebas to algae, and can be either single-celled or multicellular.

Simplest

Referring to the most basic or least complicated form, condition, or version.