Which of the following could be a text feature in a social studies textbook?

Maps and pictures of countries and continents serve as essential text features in a social studies textbook because they provide visual context that enhances a reader's understanding of geographical locations, cultural regions, and historical events. These visual aids can help students visualize spatial relationships, compare different places, and better comprehend the content being studied. For example, a map showing the boundaries of countries can help clarify discussions about political systems or historical conflicts. Including imagery of various regions can also engage students and spark interest in learning about different cultures.

In contrast, other options do not align as closely with typical features found in social studies textbooks. A glossary of terms related to literature, while useful, pertains more to literary studies rather than social studies. An author's biography may give context to the text but is not primarily a feature of social studies content itself. Similarly, a character list is common in fictional narratives and does not apply to social studies, where the emphasis is on real-world events and figures rather than fictional characters.