Spark notes is a great website to look for summaries of books. i Read those all the time and pass all my quizzes and tests.
He is a man of mystery and secrets.
Answer:
D. They realize that he is the only person who is willing to participate
Explanation: Because he has a lot of determination.
Charlie is chosen for the experiment because he is a hard worker who desperately wants to learn, despite the many setbacks and limitations he encounters. The researchers know this because Ms. Kinnian vouches for him.