The correct option is
C Saprophytes
Holozoic modes of nutrition is a method of nutrition that involves the ingestion of liquid or solid organic material, digestion, absorption and assimilation of it to utilize it. For example, amoeba.
Saprophytes are the animals which feed on dead and decaying animals. For example, moulds, mushroom etc.
Parasitic mode of nutrition is that in which organism feeds on a living organism (host). For example, leach, flatworm,plain worms etc.
Autotroph is an organism that manufactures its own food from inorganic substances, such as carbon dioxide and ammonia. Most autotrophs, such as green plants, certain algae, and photosynthetic bacteria, use light for energy.
Therefore, the correct answer is option C.