If An organism has the following characteristics

An organism has the following characteristics
- eukaryotic cell structure
- cell walls absent
- multicellular
- heterotrophic
- motile
This organism must be a(n)
a)Fungus
b)Protist
c)Plant
d)Animal
e)Parasite

D because it lacks cell walls, its heterotrophic, its a eukaryote, its motile and multicellular

I also agree with D.

Fungi and plants have cell walls, protists are not multicellular and although all of the things fit for parasites, these criteria fit all animals not just parasites.