I think the appositive phrase would be B. plays on
Cassius army fought Octavius, while Brutus's army fought Antony.
Answer: B. It gives O. Henry a way to keep key information about both main characters hidden until the end.
"After Twenty Years" is a short story by O. Henry. It was first published in his anthology <em>The Four Million</em> in 1906.
It tells the story of two friends who due to their separate paths in life have not seen each other in twenty years. However, they have agreed to meet on a particular spot near a restaurant that night. The story has a plot twist near the end, which relies on the author keeping information about the main characters hidden until the end. He does so by means of a third-person narrative.
The main subject would be after breakfast. This is because the sentence is stating what she is doing after something. So the subject isn't breakfast or errands, it would be what is happening after breakfast.
Hope I could help :D