C is the answer.We are using to classify organisms beyond molecular setting not by the physical structure.note-applicable for this question only
... termed "hypotonic," meaning less solids (or more diluted) than inside the cell. For fluid movement in/out of cells, water will diffuse (via osmosis) from the hypotonic solution to the hypertonic one, assuming a permeable barrier (i.e. cell membrane) allows it. With this case, water will flow into the cell from outside.
I know it’s a fungus (I think it’s honey fungus) but it’s heterotrophic because it doesn’t make its own food