What defines "primary sources" in nonfiction?

• A. Summaries of research findings
• B. Books and articles about a topic
• C. Original materials or evidence directly related to a topic
• D. Critiques and reviews from experts

Answer: (C)

Primary sources are defined as original materials or evidence that provide firsthand accounts or direct evidence related to a specific topic or event. This includes documents such as diaries, photographs, interviews, original research reports, and artifacts. These sources are pivotal for researchers and historians because they offer unmediated access to the subject at hand, allowing for direct analysis and interpretation.

In contrast, summaries of research findings and critiques represent interpretations or secondhand accounts of primary sources rather than the original materials themselves. Books and articles about a topic can often synthesize or analyze primary sources, but they do not constitute primary sources in their own right, as they typically provide commentary or context rather than firsthand evidence.