Refer to Explorations in Literature for a complete version of this narrative. In the chapter "Some Unfortunate Stories" in the book Ten Days in a Mad-House, author Nellie Bly departs briefly from the main chronological narrative in order to portray some interesting individual patients and their experiences.
What impact does this different narrative structure have?

a. It provides a place in which the author can add a new major idea to the text.
b. It helps the reader keep track of events as they occur from moment to moment.
c. It acknowledges an opposing view that argues against Bly's main claim
d. It allows the author to include powerful details that might not have fit into the main chronological narrative.