The pharse "sword-feast" is a kenning. Option C is correct.
A kenning is a type of circumlocution, in the form of a compound that utilizes figurative language instead of a more concrete single-word noun.
Kenning generally consists of two words, and are often hyphenated.
In other words, a kenning is a concise compound or figurative phrase which replaces a common noun.
It should include a summary of your personal insight
Well, it tells you that thoughts (which express theme) and emotions (which express mood) are closely connected, so d. theme and mood are closely linked.