Answer:
b) For trying to protect Ruth.
Explanation:
Isabel is trying to protect Ruth and she is asking for help to find her. Unfortunately, no one is helping her in finding her sister.
She is being punished instead of helping her because she disrespected Madam. She is being dragged on the streets behind a horse cart.
When Isabel finds out the truth about Ruth she is trying to confront the Madam, but she is being labeled as an insolent girl.