i think its d it should be d to match the other one
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.
Answer:
were
Explanation:
Was is singular past tense and there are two policies. So it would be Plural past tense which is were.
Glad to help!