The correct option is A Plasmodium
Protozoans are classified into ciliates, flagellates, pseudopods, and sporozoans. Ciliates are the ones that have hair-like cilia for locomotion. An example of ciliates is Paramecium. Then, we have flagellates, which have flagella for locomotion, like the Euglena. Then, we have pseudopods, like Amoeba. They have pseudopodia for locomotion. Protozoa can also be disease-causing. For example, the plasmodium parasite is a protozoan that causes malaria. They form a group called sporozoans.