After reading the passage, answer these questions
using the drop-down menus.
What information develops the central idea?
Why does the author include this information?
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It may seem surprising that no Confederate sympathizers
took action against Van Lew, given her strong and public
views on secession and slavery. Surely there were
suspicions, especially among her upper-crust neighbors,
but the matter never went beyond those suspicions.
Historians have suggested that the secessionists were
victims of their own cultural bias, believing that no
aristocratic person, and certainly not a lady, would ever
consider taking part in anything as impolite as spying. A
true lady managed her servants, prepared parties and
gatherings, and blindly supported her husband. Such
attitudes worked in Van Lew's favor, diverting suspicion
from her.
- The Dark Game,
Paul Janeczko
Intro
Done

This question is incomplete, here´s the complete question.  

It may seem surprising that no Confederate sympathizers

took action against Van Lew, given her strong and public

views on secession and slavery. Surely there were

suspicions, especially among her upper-crust neighbors,

but the matter never went beyond those suspicions.

Historians have suggested that the secessionists were

victims of their own cultural bias, believing that no

aristocratic person, and certainly not a lady, would ever

consider taking part in anything as impolite as spying. A

true lady managed her servants, prepared parties and

gatherings, and blindly supported her husband. Such

attitudes worked in Van Lew's favor, diverting suspicion

from her.

- The Dark Game,  Paul Janeczko

What information develops the central idea?

A. Van Lew was never accused of spying.

B. Van Lew had strong views on secession.

C. Women were expected to host parties.

Why does the author include this information?

A. It enhances understanding of spy techniques.

B. It explains the cultural bias of the time.

C. It complicates understanding of Van Lew´s views.

A. Van Lew was never accused of spying.

B. It explains the cultural bias of the time.

Explanation:

The fact that Van Lew, an aristocratic woman who showed publicly her ideas against secession and slavery, wasn´t accused of spying shows that it was the cultural bias of the time what worked on her favor to divert any suspicion from her.

It was the secessionists´ cultural bias that made them unable to even imagine an aristocratic woman being a spy, despite having some suspicions.