The student's exploration method is appropriate for the research question, as they have clearly outlined the manipulation of the independent variable (different pH) and the measurement of the dependent variable. However, the proposed method may not collect sufficient and relevant data, as the number of repetitions is inadequate. Additionally, the method lacks sufficient detail for replication, as the pH group in each tray is not clearly identified in the provided picture. The student's sampling approach is well explained and reasoned, aligning with the natural conditions of acid rain. They have also effectively listed and described the risks associated with the exploration. However, environmental considerations, such as the safe disposal of acid-contaminated soil, were not addressed, although the student correctly noted that no ethical considerations were relevant to the nature of the experiment.
