The correct option is B Show that Mrs. Deverell continues to be diminished in her new home
In her new home with Angel, Mrs. Deverell had no role to play- all the household chores were to be left to the servants alone and all other responsibilities were taken over by Angel. With nothing to do, Mrs. Deverell would fretfully wander around the house, bored. In this context, the author uses the simile of an intimidated child. Therefore, this simile serves to show the reader Mrs Deverell's diminished role in her new house. Thus B is the best answer.