Animal Protozoa are unicellular and they are

Answer: Option A

Animal Protozoa are unicellular and they are Eukaryotic.
Protozoa are a group of single-celled eukaryotes, either free-living or parasitic, that feed on organic matter such as other microorganisms or organic tissues and debris.
Protozoans were regarded as "one-celled animals", because they often possess animal-like behaviours, such as motility and predation, and lack a cell wall, as found in plants and many algae.