The GED test usually asks questions about character, or the people in a story. For example, you might be given a list of personality traits and asked which ones best describe a certain character. Watch these videos for more information about character in fiction.
And here's what it might look like on the GED test
Read a bit more about how to analyze character here:
This story was written in England about 100 years ago, so it uses a lot of very formal language. Don't worry about understanding every single word; focus on the plot and characters.