The student clearly states the independent variable as the mass of green tea leaves and the dependent variable as the rate of amylase-catalyzed starch hydrolysis, demonstrating a solid understanding of their relationship. The research question outlines the method of analysis, specifying the measurement of absorbance over a set time period, and the background theory is well-articulated, linking biochemical concepts to the investigation. The student provides a comprehensive explanation of the chosen techniques for measuring the variables, the rationale behind the sampling methods, and discusses controlled variables effectively. Furthermore, the student addresses safety, ethical, and environmental considerations, ensuring a well-rounded approach to the investigation's methodology, which is described in sufficient detail for reproducibility without irrelevant information.
