Answer:
paramecium is the correct answer.
Explanation:
A common protozoan that moves by cilia is the paramecium.
paramecia are the single-celled organism, they live in the aquatic habitats.
The whole body of the protozoan is covered by cilia.
Cilia is hair-like organelles that help the paramecium to swim in the water as they have streamlined structure.
The function of cilia in the life cycle of a protozoan is it help in locomotion and in food ingestion.
