Answer :
Answer:
D. energy, electrons, and carbon
Explanation:
Nutrition is a process by which organisms obtain their food to get energy. The organisms that synthesize their own food is called as autotrophs and the organism that obtain their food from other sources are called heterotrophs. Such types of heterotrophic organisms that obtain energy by oxidation of organic compounds are called chemoorganoheterotrophs such as heterotrophic prokaryotes, fungi and some other. The word chemo indicates energy, organo indicates electrons and the hetero indicates about carbon source.