The t-shirt that they give only to people who finish is a big reason that so many people take up the challenging race.
This paraphrase presents the same information as in the sentence, but since it should be a bit more of a summary, it takes out the specific detail of how many people actually run the race, which can just be paraphrased into 'so many'.
Answer:
The children must discipline themselves to build them, to use proper latrines, and to follow other rules. Ralph is a leader in this regard, but the children instead want to play.
Explanation:
hope that helps & that im not too late
For example, it means everyone contributes, so when you go to dinner with a group of people, you would all pay for your own bill.