The student clearly stated the independent variable, which was the temperature of the NaCl solution, and the dependent variable, the current measured through the solution, in the research question. However, the student failed to describe the analysis method, as the research question did not specify how the current would be measured. The methodology was well-detailed, including a systematic approach to measuring variables and a clear explanation of the controlled variables. Still, it lacked discussion of safety and ethical considerations related to the investigation. The student demonstrated an understanding of environmental issues and provided sufficient detail in the methodology to allow for reproducibility. Overall, while the student successfully addressed several key aspects, some areas needed improvement in clarity and completeness.
