The correct option is B Plasmodium
Slime molds are organisms that exist as slimy masses and are commonly found on decaying plant matter. They are classified among the protists as two distinct phyla, Dictyolsteliomycota (the cellular slime molds) and Myxomycota (the plasmodial slime molds). The plasmodium ingests bacteria, fungal spores, and maybe other smaller protozoa.