The student presents a well-focused and detailed investigation on the effect of sunlight exposure on the vitamin C content in orange juice. The background information is relevant and organized, linking the investigation to knowledge from the IB chemistry syllabus. The methodology is highly appropriate to the topic, correctly identifying the independent and dependent variables to answer the research question and including appropriate steps to assure the validity of the results. The student also shows full awareness of safety, ethical, and environmental concerns that can arise during the experiment.
