Answer: B. amoeba
Step-by-step explanation:
Bacteria and eukarya are the prokaryotic organisms other living organisms are eukaryotic in nature. E. coli and Salmonella are the examples of two different types of bacteria. Therefore, they are prokarotes.
Amoeba is single celled eukaryotic organism. It exhibit membrane bound nucleus that consists of genetic material in the form of DNA. The cytoplasm and the cellular material is enclosed inside the cell membrane.