Fill the gaps in the text with the correct answer (A, B, C, or D).

1. B, 2. D, 3. A, 4. C, 5. B, 6. A, 7. D, 8. C, 9. B, 10. A, 11. C, 12. B, 13. C, 14. A, 15. A, 16. C