Which of the following is an example of primary source material?

The correct choice is diary entries, as they represent firsthand accounts or original documents created by individuals reflecting on their personal experiences, thoughts, and feelings at a specific time. Primary source materials are characterized by their direct connection to the subject or event being researched, providing raw data or evidence without any interpretation or analysis applied to them.

In contrast, analysis articles and textbooks compile information, explanations, or interpretations of existing knowledge and research, which categorize them as secondary sources. Historical novels are fictional works inspired by historical events but do not serve as authentic evidence of those events; they often include creative elements that may not accurately represent historical facts.