The student clearly stated the independent and dependent variables in the research question, identifying the time of ripening and external factors as independent variables, with glucose concentration as the dependent variable. The research question also described the analysis method using refractometry, providing a clear framework for the experimental design. A detailed background theory was included, linking glucose's role in energy production to the investigation and demonstrating a good understanding of relevant concepts. The student effectively explained the choice of techniques for measuring the variables and discussed the sampling technique, trials conducted, and controlled variables. However, the student did not address ethical issues associated with the investigation, which should have been included for a more comprehensive analysis. Overall, the methodology was well described, allowing for reproducibility without irrelevant or repetitive information.
