Might be “most skillfully”.
Answer:
like the night Of cloudless climes and starry skies
Explanation:
Alliteration refers to the occurrence of the same letter or sound at the beginning of adjoining or nearby words. In that respect, the line from Lord Byron's "She Walks in Beauty" contains the same sound /k/ at the start of the words <em>cloudless </em>and <em>climes</em>, and the same sound /s/ at the beginning of the words <em>starry </em>and <em>skies</em>.
B. Giving human qualities to nonhuman objects.
