What do the rabbit, fungus, and trees have in common?

The rabbit, fungus, and trees have in common are all multicellular organisms.

(4) They are all multi-cellular organisms.

Explanation:

All three above given organism's belongs to multicelluar because:

Rabbit:  The individuals who have a place with the realm of Animalia are grouped by having the attributes of being multicellular and heterotrophic.Trees: Trees are multicellular creatures. They are comprised of eukaryotic cells, which are intricate cells brimming with organelles.  Fungus:  Parasites live as either single-celled living beings or multicellular life forms. Single-celled parasites are alluded to as yeasts. By far most of the growths are multicellular.

The vast majority of the assemblage of organisms is produced using a system of long, Since these are called hyphae.