While conducting research you found the following piece of evidence in a biography written by a friend of Jack Londons: Jack London loved working on his ranch in Glen Ellen, California. What type of source does the evidence directly above come from?

The evidence in the passage is a secondary source.

Explanation:

A primary source can be defined as any record containing firsthand information. An autobiography written by Jack London would be a primary source when it comes to a research about him. Other examples of primary sources are diaries, letters, memoirs, etc. A biography, on the other hand, is a secondary source. The person writing it is writing about someone else's life and experiences. Even if it is a friend, and even if this friend witnessed some things, the biography as a whole concerns another person's life story, not the author's.