Answer:
The purpose of a primary source document is a way to promote a deeper understanding. A primary source is a source that is acquired first-hand such as an interview, diary or autobiography, so a source that consists of original material, such as an interview.
Step-by-step explanation:
Primary sources help students relate in a personal way to events of the past and promote a deeper understanding of history as a series of human events. Because primary sources are incomplete snippets of history, each one represents a mystery that students can only explore further by finding new pieces of evidence.