Answer:
By revealing important events in a character's past.
Explanation:
Flashbacks help us understand characters more and build on characters' personalities. They help us understand why they do certain things and what has led up to their current decisions. I guess it could be number three, but the first answer is the most obvious and logical one.
Start off by writing the rescue teams. Then state you opinion wether you think they are helpful or not. I think they are helpful. Then give examples of how they helped. Then in the conclusion restate your opinion and give your final sentence but make that sentence make people think you are a very good writer
The answer to that is Hyperbole
