The detail that should be included in a summary of Elizabeth Van Lew’s role as a spymaster during the Civil War is her home was used as a safe house. Thus, the correct option is B.
In literature, the word "summary" may be defined as a concise overview or outline of a more extensive work that provides the reader with a complete interpretation in a better way.
The context of this story illustrates Elizabeth Van Lew’s role as a spymaster during the Civil War. Her home was used as a safe house" is not significantly distinguishing but it correlates straight to her work in spying.
Therefore, it is well described above.
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