A scientist is trying to classify a new organism. She observes that the organism is a microorganism. It is prokaryotic, and reproduces through binary fission. It was found living in a hydrothermal vent. What is the best classification for the organism?

Based on the given characteristics, the best classification for the organism would be a member of the domain Archaea. Archaea are prokaryotic microorganisms that reproduce through binary fission and are often found in extreme environments such as hydrothermal vents.