Answer:
It helps you get ready for other things you have to do.
Explanation:
When you summarize, you take the main points of a story and write in in a few sentences. You want to make sure you hit all the key parts of the story and don't focus on the small details. If you were telling a friend about a movie you saw, you would by describe the major events, but not the little moments. That would be summarizing. You can do this with any book,movie,story etc. :)
A prefix, which is often the first word part.
Anything which is not stable (unlikely to move) is unstable.
