Which of the following would be categorized as a primary source relic?

A primary source relic is an original object or document that has not been altered or interpreted, providing direct evidence or firsthand testimony about the subject being studied. In this context, an ancient piece of pottery serves as a tangible artifact from the past, allowing researchers to analyze its form, function, and cultural significance directly. This type of source offers unique insight into the time period in which it was created, making it invaluable for historical and archaeological research.

The other options do not qualify as primary sources because they either involve interpretations or analyses rather than original evidence. A modern book review is a contemporary commentary on a book and thus is a secondary source. An author's autobiographical account, while a personal narrative, can be considered a secondary source if the author is reflecting on their experiences rather than presenting original, untouched items. A scholarly analysis of medieval art interprets or critiques artifacts and artworks, making it a secondary source focusing on analysis rather than direct evidence.