The student provides a detailed and focused description of the experiment's aim, which is to examine the effect of temperature on the dissolved oxygen concentration of saline water. The background information is well-organized and includes all necessary concepts from the IB Chemistry curriculum, such as the Winkler method, which is explained thoroughly. The methodology is appropriate to the topic and includes steps to maintain the validity of the results. The student also correctly identifies the independent and dependent variables to pursue the research question. Overall, the student demonstrates a clear understanding of the experiment and its objectives.
