The student effectively incorporated relevant and appropriate source material throughout the extended essay, consistently supporting the research question regarding Samsø's sustainability model. They utilize a variety of credible sources, including scientific publications and reports, ensuring that the information is reliable and well-founded. The student skillfully integrate resources and methods, such as interviews and statistical data, to bolster their arguments and demonstrate the impact of sustainability initiatives on the local community. Geographic terminology was used correctly, and technical terms are clearly defined, showcasing the student's understanding of the topic. Furthermore, the essay maintains an academic tone, reflecting a formal and analytical style throughout.