The correct option is C Slime molds
Monera :
Kingdom monera includes bacteria. Bacteria are unicellular, microscopic prokaryotes.
Protista :
Protista includes all unicellular eukaryotes.
Fungi :
Fungi includes unicellular or multicellular heterotrophic eukaryotes.
Slime molds :
Slime moulds are classified under the kingdom Protista. They live in cool moist and shady woods, decaying logs and humus. They do not possess cell walls (naked cytoplasm) and are saprophytic in nature. At maturity, it may contain several hundred to thousands of nuclei (multinucleate).
Conclusion :
Naked cytoplasm, multinucleated and saprophytic are the characteristics of members of slime molds, that are classified under the kingdom Protista.
Final answer:
d. Slime molds.