The correct option is
D All of the above
Protista have various modes of nutrition. They are phototrophs, heterotrophs and myxotrophs. Protozoans mainly have ingestion as mode of nutrition (holozoic). Algae like Protista have photosynthesis as mode of nutrition (holophytic) and fungi like Protista have absorption as mode of nutrition (saprophytic).
Thus, the correct answer is option (D).