Final answer:
A diary of a Holocaust survivor is an example of a primary source.
Step-by-step explanation:
A. a diary of a Holocaust survivor
A primary source is a document or artifact that was created during the time period under study. It provides firsthand information or direct evidence about an event or time period. In this case, the diary of a Holocaust survivor would be considered a primary source because it was written by someone who experienced the event firsthand and provides a firsthand account and perspective.
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