The correct answer is A. Holozoic.
Amoeba is a heterotroph, which means that it cannot produce its own food and must consume other organisms to survive. Holozoic nutrition is a type of heterotrophic nutrition in which organisms ingest whole food particles. Amoeba engulfs its food particles using pseudopodia, which are temporary projections of its cytoplasm. The food particles are then digested in a food vacuole.
Holophytic nutrition is a type of autotrophic nutrition in which organisms use sunlight to produce food. Photosynthesis is the process by which plants use sunlight to produce food. Saprozoic nutrition is a type of heterotrophic nutrition in which organisms decompose dead organisms to obtain nutrients. Myxotrophic nutrition is a type of heterotrophic nutrition in which organisms can both ingest whole food particles and absorb nutrients from the environment.