I`ve read this book like 9 times, so i`ll take a gander and say it`s C. Smaug had promised it to him if he led him to the dwarves.
D. read the stem first...
Answer:
Application for the post of a Biology prefect.
I hereby apply for the post of a prefect in the school because I am explicitly good at Biology and also good in experimenting with living things. I love nature and also inquire to solve difficult task. I will be grateful if my request is favourably considered
I believe it to show some source of burning or chaos,sorry if this did not help