The student clearly states the independent variable as the concentrations of maltose solution and the dependent variable as the rate of fermentation in Saccharomyces cerevisiae. The methodology is well described, detailing the measurement of fermentation rates and the relevant theoretical background on the fermentation process. Controlled variables are identified, and safety, ethical, and environmental issues are appropriately addressed. However, the student lacks clarity in explaining the choice of techniques for measuring the variables and the rationale behind the sampling technique and number of trials, which need further elaboration for a more robust methodology. Overall, the methodology is sufficiently detailed to allow for replication, with no irrelevant information included.
