The answer is B. the conflict moves the action forward and the reader wants to keep reading to see if that conflict gets resolved. if it's an ongoing conflict...then in that part if the sorry there is the course of action residing to the conflict
You need to take the main parts out of the excerpt to figure out what the excerpt is trying to teach you as the reader. After you determine that you must figure out what the main idea is and the topic of the excerpt.
Hope this helps.