In AP World History, understanding the structure of Overview, Parts, Title, Interrelationship, and Conclusion—often referred to as the OPTIC strategy—can help students analyze visual and textual sources more effectively, especially in preparation for the Document-Based Question (DBQ). 1. Improves Source Analysis (Especially for DBQs) Students must interpret images, maps, political cartoons, or charts.OPTIC gives them a systematic way to break down visual and written sources, helping them