The last section discusses tolkien's writing for his children. suppose that he kept a scrapbook of these magical letters. if lee washington uses this scrapbook as a source for another article about the life and works of tolkien, the scrapbook would best be described as a) a primary source b) a secondary source c) a fictional source d) a biographical source

The scrapbook would be a primary source.

Technically, the letters themselves are the primary source. The fact that they are contained together in a scrapbook is unimportant. They could just as easily be kept in a binder or folder.

A primary source provides direct evidence, such as the kind contained in these letters. A secondary source describes or comments on a primary source. The letters themselves are, then, a primary source. They would not be fictional or biographical.