The correct option is C Autotrophic
Amoeba is not autotrophic because their carbon and energy must be obtained by eating or absorbing organic compounds originating from other living organisms. When an organism takes food from another organism, it is called as heterotrophic nutrition. Different heterotrophic organisms follow different methods to take and utilise food. Holozoic nutrition happens in five steps, i.e., ingestion, digestion, absorption, assimilation and egestion. Amoeba has a holozoic nutrition. Hence, the correct answer is option D.