Answer:
This document could have been used to support the account.
Step-by-step explanation:
The document presents the report of an eyewitness, who is a person who witnessed the event of a certain event, in which case, that person can report it based on his memories of that event.
Therefore, an eyewitness testimony can be used to provide a document and that document can be used to support the account. However, it must be shown that this document is based on a witness's report and not based on proven scientific facts.