The student outlines a method that is appropriate for the research question, using Allium fistulosum to investigate the effects of varying amounts of waste coffee grounds as fertilizer. The proposed method is detailed, allowing for replication, and the student ensures the collection of relevant and sufficient data by measuring plant height over a six-week period with a control group. However, the student does not clearly outline the rationale behind the specific sampling approach or the increments of coffee grounds used, which could enhance the justification of the experimental design. While risks and ethical considerations are well addressed, the student should provide more clarity on the environmental implications of using coffee grounds as fertilizer.
