The student clearly states the independent variable as the concentration of black tea solution and the dependent variable as the germination and growth rate of Solanum lycopersicum seedlings. However, the research question lacks specific details on the method of analysis, such as how germination and growth rates will be measured. While the background theory is well-developed and relevant, the student needs to clarify the choice of measurement techniques, sampling methods, and controlled variables, as well as address the number of trials conducted. Additionally, the student identifies safety issues but should provide more detail regarding ethical and environmental considerations associated with the investigation. The methodology is well-described and free from irrelevant information, allowing for reproducibility of the experiment.
