Final answer:
Toxoplasma gondii belongs to the group of Protozoa, which are eukaryotic organisms that can cause toxoplasmosis in humans and animals.
Step-by-step explanation:
Toxoplasma gondii belongs to the group of Protozoa which are eukaryotic organisms. Protozoa are a diverse group of unicellular organisms that have complex cellular structures and are classified in the kingdom Protista. Toxoplasma gondii is a type of protozoan parasite that can cause toxoplasmosis in humans and other animals.