Context: The not knowing if he was or he was n't . It was literally killing me ! Fortunately , a friend recommended a book to me that changed my life .

Question: Why is the narrator so grateful to the friend ?
Options:
0. The friend has recommended them for a course .
1. The friend has recommended them for a loan .
2. The friend has recommended them a job .
3. The friend has recommended them a great book .
Answer: 3