Which is the best example of a secondary source document useful in the study of history?

Aa letter from a relative of a participant in a battle or campaign
Ba newspaper article written the day after an event occurred
Can academic analysis of key battlefield strategies
Dan officer's listing of military personnel killed in battle

Verified Answer :

Most likely B because you have evidence of what happened that day

The best example of a secondary source document that's useful in studying historical facts is a newspaper article written on or the day after an event occurred. This will show that the event did take place and can't be forged.