Answer:
a brief summary of a story's events
Explanation:
A summary is a brief summary or a brief recopilation of the events of a story, this is often used to explain or to give a little teaser for readers, possible viewers or critics that want to have an idea on what a movie, novel or story is about.
c. Facts
When you're writing to inform, you must state facts.
B. I think, since 'able' means you can.
Paragraph 3 is the correct answer :)