The student provides a focused and detailed description of the research question and gives relevant and focused background information on mouthwash and its ingredients. The biology behind different mouthwash ingredients used in the study is also clearly explained. The methodology is highly appropriate to the topic, focused on answering the research question and includes appropriate steps to assure the validity of the obtained results. However, the student needs to clearly state their hypothesis and show full awareness of ethical concerns that can arise during the experiment.