select the organism that belongs to the protist kingdom.

select the organism that belongs to the protist kingdom.

select the organism that belongs to the protist kingdom.

Answer

Brief Explanations:

The horse is an animal, the fern is a plant, and the mushrooms are fungi. The microscopic - looking organism in the second image is likely a protist as protists are a diverse group of eukaryotic microorganisms.

Answer:

The organism in the second image.