A microbiologist is in the process of classifying a newly discovered organism. Its characteristics include: eukaryotic multicellular reproduces by spores motile in some stage of its life cycle decomposer Which type of organism is it most likely to be?

A fungus-like protist can be a multicellular eukaryotic decomposer that reproduces by spores and has a motile stage in its life cycle. The motile stage is the key clue: sac fungi and club fungi generally lack motile stages, and plant-like protists are not typically decomposers. Therefore, the organism is most likely a fungus-like protist.

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