Which source is most clearly a secondary source? A. A book about the first U.S. moon landing B. A photograph of the first person to walk on the moon C. An interview with an astronaut who walked on the moon D. The diary entry of a U.S. astronaut.

Among the given options, A. A book about the first U.S. moon landing is most clearly a secondary source. Secondary sources interpret, analyze, or summarize primary sources and provide a second-hand account of an event or topic.

Characteristics of Secondary Sources

Secondary sources are characterized by their analytical, interpretative, or summarizing nature regarding information originally presented elsewhere.

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  • Examples:
    • Academic books discussing historical events
    • Journal articles reviewing existing research

Comparison with Primary Sources

To contrast, primary sources offer direct, firsthand evidence about an event, making them distinct from secondary sources.

  • Examples of Primary Sources:
    • B. A photograph of the first person to walk on the moon: Offers direct visual evidence.
    • C. An interview with an astronaut who walked on the moon: Provides firsthand accounts.
    • D. The diary entry of a U.S. astronaut: Contains personal reflections and experiences.

Secondary sources like a book about the first U.S. moon landing play a crucial role in understanding and interpreting historical events by providing context, analysis, and commentary that enrich our comprehension of the primary evidence.

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