Q: What make us sick when they become human parasites?


Read this paragraph and choose the correct option from the provided answers:

Most protist diseases in humans are caused by animal-like protists, or protozoa. Protozoa make us sick when they become human parasites. Three examples of parasitic protozoa are described below.

 Choices:

- detritus

- viruses

- larvae

- protozoa


A:
protozoa