Answer:
On the threshold of the prison-door, she repelled him, by an action marked with natural dignity and force of character, and stepped into the open air, as if by her own free-will.
Explanation:
A.Yes
The verb given does agree with the subject of the sentence.
I think the answer is C
A is the answer
you have to read with understanding
i- chile anyways stay safe and wear a mask <33