Final answer:
Line A exhibits kennings and alliteration.
Step-by-step explanation:
In the given options, line A exhibits both kennings and alliteration. Kennings are compound words or phrases used as a poetic device to describe something in a different way. In line A, the phrase 'sea-eagle' is a kenning for a bird. Alliteration is the repetition of consonant sounds in close proximity. In line A, the words 'full', 'oft', 'forebodingly', and 'screamed' all start with the same consonant sound 'f', which is an example of alliteration.
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