Question

Someone who's read the hobbit please help!
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Why do the different groups in the novels sing songs?


A.
The songs help the singers express their hopes and fears, what they like and dislike.


B.
The songs warn the singers about dangers they have yet to face.


C.
The songs calm the enemies of the singers and make them safer.


D.
The songs help the singers find their way when they get lost or escape when they are captured.