Answer:
hi your question lacks the needed option hence here is the complete question with options
a documentary with expert analysis of the event in question
a peer-reviewed article written about the event by a respected historian
a professorial analysis of key battlefield strategies of the event
a journal excerpt from a person involved in the event in question
Answer is : A journal excerpt from a person involved in the event in question
Step-by-step explanation:
A primary source is a first hand source of information about some event or group of events understudy. it usually involves the original source of the event or a person directly involved or affected by the event.
In the study of history a journal excerpt from a person involved in the event understudy by the historian is regarded as a primary source of information because the information contained in this excerpt will be directly from the person involved and not a third party