The student clearly states the independent variable, temperature, and the dependent variable, light transmittance, in the research question, demonstrating a strong understanding of their relationship. The methodology is well-described, detailing the measurement techniques for both variables and outlining controlled variables, safety, ethical, and environmental considerations. The student provides a comprehensive background theory relevant to the investigation, ensuring a solid theoretical framework. However, there is some repetitive information regarding sugar concentration that needs clarification to enhance the clarity of the methodology. Overall, the student presents a thorough and systematic approach to the experiment.