Answer:
The correct is the option B. a foreboding tone.
Explanation:
My assumption is that the first element of the question is itself the Haiku of interest but this is not really clear if I am honest. For myself I find that the approach creates a somewhat monotonous tone.
The adaption they use is literary adaption in which the authors in which they adapt a literary source to another genre.
Beowulf's greatest enemy is no monster but himself and his pride, or hubris. It is his greatest weakness which results in his death. It is predicted or foreshadowed throughout the entire story. Begining with the stories of his youth and then his private conversations with Hrothgar in Heorot. His avarice and obsession for the attention of his friends are the result of his pride, not separate characterstics.