The correct option is D Amoeba, Paramoecium, Dinoflagellates, Diatoms
Kingdom Protista includes the unicellular eukaryotic organisms which are predominantly aquatic, with many forms that are marine.
Kingdom Protista includes dinoflagellates, diatoms, Gonyaulax, Euglena, Paramoecium, Entamoeba, Amoeba, Trypanosoma,
Plasmodium, slime moulds, etc.
Yeast and mushrooms belong to Fungi.
Hydra belongs to Animalia.