How do protozoa typically move?

Protozoa typically move by employing flagella, cilia, or pseudopodia, which are specialized structures suited for locomotion. Flagella are long, whip-like appendages that propel the organism forward, allowing it to swim through fluids. Cilia are shorter, hair-like structures that cover the surface of some protozoa and can beat in coordinated waves to create movement. Pseudopodia are temporary projections of the cytoplasm that enable amoeboid movement, allowing protozoa to extend their cell membranes and flow in the direction of movement.

This means that the dynamic nature of how protozoa navigate their environment relies on these active, coordinated movements rather than passive mechanisms such as diffusion. The other options either misrepresent how protozoa interact with their environment or describe processes not associated with their primary movement strategies.