Answer:
B. They help historians make connections between different historical events.
Explanation:
Primary sources and secondary sources help historians to research and conclude about the past. Primary sources are the basic and immediate account of the past. Sources include books, letters, video data, databases, etc. Secondary sources are the interpretation that gets followed after the primary ones. Historians form analysis and researches out of the primary texts and data. The events that occurred in the past are written and presented by the writers who do not witness those events personally. These sources help the historians to present interpretations of the events and form connections between them.
