Look at the details in paragraph 12:
[12] I was put in the cellar under the courthouse. It was a cold, terrible place, without heat, damp and dark. I slept in my clothes by day, and at night I found great sewer rats with a beer bottle. How is the central idea developed from these details?
The author uses details that describe the conditions of her imprisonment to develop the idea that she thought ending unfair working conditions was great sacrifices.