Multiple Choice

1. A (Various chapters)

2. B (Various chapters)

3. D (Chapter 3)

4. A (Various chapters)

5. C (Various chapters)

6. A (Chapter 33)

7. A (Chapter 9)

8. D (Various chapters)

9. B (Chapter 34)

10. B (Chapter 34)

11. D (Various chapters)

12. A (Various chapters)

13. D (Chapter 35)

14. C (Chapter 3)

15. B (Chapter 11)

Long Answer

1. Rather than just looking for physical clues, as the Scotland Yard detectives do, Poirot reflects deeply to better understand the psychology of the killer. The other detectives focus on forensic evidence and don’t show much interest in discovering plausible motives, which prevents them from discovering the guilty party. (Various chapters)

2. She reveals his vulnerable state of mind as well as challenging factors in his life history, such as the bullying he experienced and his service as a soldier in World War I. (Various chapters)