The student clearly stated an appropriate and specific question for the historical investigation: "To what extent were Mao Zedong and his agricultural policies responsible for the Great Chinese Famine of 1959-61?" The question selected has a clearly defined scope in terms of dates, significant historical figures, and historical events. The student chose appropriate and relevant sources for the topic of the investigation, including books written by educated historians and articles from well-known journals. The student also explained the relevance of the sources to the topic of the investigation, as well as the nature and form of the chosen sources. Additionally, a precise analysis and evaluation of the values and limitations of the origin of the selected sources is present. However, the student should include a precise analysis and evaluation of the values and limitations of the purpose and content of the sources.