Answer:
fungus-like protist
Explanation:
A fungus mostly has those characteristics. Most of them are multicellular eukaryotes -- the exception being yeast, which are unicellular eukaryotes. They can reproduce by spores and are decomposers; they even consume via absorptive feeding!
First, it's definitely not plant-like, as it is a decomposer, and there is no indication that it can produce its own food. It doesn't entirely seem like a fungus either, so the answer is a fungus-like protist.
