It is a fragment sentence.
I think that it is Douglass's fight with Covey that renews his desire to be a free man. After two hours of fighting, Douglas prevails over Covey. Douglas feels it is possible to win against the odds; he thinks escape and freedom can happen. I hope that this is the answer that you were looking for and it has helped you.
The story entitled "Hearts and Hands" written by O. Henry is about the influx of passengers into a certain express, name B&M and the two young men with opposing physical characteristics handcuffed together. As they arrived to the express, the only available seat is that which faced an attractive young woman. One of the men is the marshal and the other one is his captivated criminal about to be taken to prison.
the answer would be D.
the reason why is it contains apart that is not needed: "which belonged to mama"
hope this helps :)