The sentences write after his story shows the family's initial reaction which is mostly doubtful from the son and the wife
that was a good story!
B. My sister (who has never been early to anything in her life) had somehow arrived at the park ahead of me.
- In this sentence we are using parentheses to describe a person i.e your sister. Only option B has the correct use. According to sentence bracket should be there after sister.
The answer is : B. The survival of her children in difficult circumstances
Hope this helps ✌️✌️✌️
Fact: Also her dream is to own a house and garden.