To move, nonmotile protists depend on

air or water currents and other organisms.

cytoplasmic projections.

cilia and flagella.

microtubules.

To move, nonmotile protists depend on air, water currents and other organisms. The correct option among all the options given in the question is the first option. Protists are actually grouping of diverse eukaryotic organisms that are neither animals nor plants or fungi. Other than their very simple type of organization, they do not have much in common.