The student does not clearly state the independent variable (salt concentration) and the dependent variable (buoyant force) in the research question, lacking specific values and units for clarity. Additionally, the student fails to describe the method of analysis for measuring the buoyant force, which detracts from the overall understanding of the investigation. While the background theory and explanation of techniques for measuring variables are well articulated, the student does not adequately discuss the rationale behind the number of trials or address safety, ethical, and environmental issues associated with the investigation. Furthermore, the methodology, while detailed, contains irrelevant information that could be streamlined for better clarity.
