A prologue is used to give readers extra information that advances the plot. They can give more background information about a story or describe a scene from the story that could be from the middle of the story to capture the readers' attention or some past event that is motivation for the novel. The prologue can also tell the story from a different point of view or a different time.
The fact that he picked something as silly as breaking eggs shows that Swift does not expect the reader to take the dispute seriously.
After many years of trashing China, they are slowly cleaning up.
I believe the answer to that would be "B", "descriptive, yet brief."
