What would qualify as a primary source for Clarence's report?

A primary source provides direct or firsthand evidence about an event, object, person, or work of art. This means it is original material that has not been altered or interpreted in any way. In the context of Clarence's report, experiment results qualify as a primary source because they are original findings derived from Clarence's own research or experimentation. These results reflect firsthand data and insights that are essential for drawing conclusions and informing the report.

In contrast, published articles, review studies, and books on the subject represent secondary sources. These sources discuss or analyze findings from primary sources, offering interpretations or summaries rather than presenting original data. As such, they lack the direct evidence provided by experimental results, making them invaluable for context but not suitable as primary sources for Clarence's work.