Final answer:
The amoeba Entamoeba histolytica is a pathogen and heterotroph that causes amoebiasis and forms liver abscesses, obtaining its nutrition from other organisms.
Step-by-step explanation:
The amoeba Entamoeba histolytica is a pathogen that causes amoebiasis, including severe cases known as amoebic dysentery, and forms liver abscesses in infected individuals. Considering that E. histolytica is transmitted through fecal contamination of water or food and ingests particles of food by a process called phagocytosis, it obtains its nutrition from organic material. Hence, its metabolic classification is most likely heterotroph. An organism that feeds on organic matter, such as another organism, is considered a heterotroph, which aligns with the metabolic behavior of this protozoan parasite.