Answer:
Claim: The organism is a bacterial cell.
Evidence: The organism is unicellular, prokaryotic, and reproduces by binary fission.
Step-by-step explanation:
The organism cannot be a protist based on the evidence. Protists are unicelluar, eukaryotic, and live in a moist environment. Binary fission is the primary way that prokaryotic cells reproduce, so that does not apply to protists.
The organism is a bacterial cell, but bacterial cells are prokaryotic, not eukaryotic. They can be found in moist environments but that is not a defining factor of bacteria, like it is for protists. Bacterial cells are unicellular.