The student clearly stated an appropriate and specific research question regarding foreign involvement in the Angolan Civil War, effectively framing the investigation within a defined historical context from 1975 to 2002. The scope of the investigation is well-defined, highlighting key political factions and significant historical events. The student chose relevant sources that directly address the topic and explained their contributions to understanding the investigation, although they did not specify whether the sources were primary or secondary. Nonetheless, a precise analysis of the values and limitations of the origins, purposes, and content of the selected sources is present, demonstrating a comprehensive understanding of their relevance to the investigation.