The chorus sang the refrain. In most songs, the "chorus" refers to the part that is repeated. It does not necessarily mean that everyone took part, so you can go ahead and rule out option D. There is also no indication that the chorus took the part of the Lord, so you can also eliminate that option. Option A is too broad, so that can also be eliminated, leaving you only one answer. Hope this helps.
Answer:
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This event is most clearly an occurrence of <span>dramatic irony.
</span>Dramatic
irony is when the readers know something that the characters of the
novel do not. So here, we know that the weapon began to repair itself,
and the characters do not.