It is most likely B. An intransitive verb doesn't have an object, the action verb(cheered) is in front as well.
I don’t know because I don’t see any passage or story to your answer, can you tell me the name of the book or story so I can look up the book
A pledge,promise, or agreement to do something
Answer:
The word would be are but it does all but one.
The answer to your question is symbol