The tone of this text might best be described as _________.

The tone of this text might BEST be described as cautiously optimistic. The passage discusses a new treatment method against antibiotic-resistant bacteria and highlights the potential of star-shaped peptide polymers created by a team of researchers. While addressing the seriousness of antibiotic resistance and the rise of superbugs, the text also presents the positive findings and effectiveness of the peptide polymers in killing bacteria. The tone balances the potential impact of the research with the acknowledgment that further research is needed. Overall, it conveys a sense of hope and possibility while acknowledging the ongoing challenges in the field.