The student provides a focused and detailed description of the main topic, clearly stating their aim to explore how enzyme activity is affected by the concentration of a substrate. They also provide relevant and focused background information on lactase and milk. However, the explanation of the biology could be improved to ensure that the reader fully and easily understands it without the need for rereading. Additionally, the student should include a null hypothesis and address any ethical and environmental concerns that may arise during the experiment. Overall, the methodology is highly appropriate to the topic and focused on answering the research question, with appropriate steps to assure the relevancy and validity of the obtained results. The student also demonstrates awareness of safety hazards.
