Answer:
A primary source is something that was created/used during the period that is being studied
Step-by-step explanation:
Unlike secondary sources that are considered to be an explanation or further analysis on the main source, Primary Sources are the main sources or materials of historical analysis.
They are considered to be the documents or artifacts nearest to the subject of inquiry. They are mostly established "during the period that is being studied"
For example documents such as correspondence, diaries, newspapers, government documents, artworks.