<span>B.because some subordinate ideas are important and must be indicated with free-floaters </span><span> Sometimes different notes and ideas are important to the overall topic, but they are not directly related to your main mind map. Having free floaters will help keep track of ideas that might not feel like they're major, but looking through at the end of the passage, chapter, or novel might connect all together as important subordinate ideas.</span>
What it's basically asking is for you to name two places within the book that you believed were the most important to the story and why. For the why it wants you to explain what was so important about these places that they made the character who they are now.