The student effectively incorporated relevant and appropriate source material throughout their essay, aligned with the research question on Frankfurt's urban development. They utilized a range of accredited sources, including government reports and academic articles, enhancing the credibility of their analysis. The student skillfully integrated geographic terminology and technical terms, provided clear explanations, and demonstrated a strong understanding of sustainable urban development concepts. Furthermore, the tone and style of the essay maintained an academic and analytical level, which contributed to the overall quality of the work.