Which of these images reflects a juxtaposition? “whisper of sequins; ” “a disk of fire” “rich seas; ” “million algae” “the music of birds; ” “the laughter of dogs” “eyes to pulp-fragments; ” “burned human flesh”?

"whisper of sequins” and “a disk of fire”

Explanation:

Juxtaposition is the junction of two or more words or radicals, without altering these formative elements. They maintain the same spelling and accentuation that they had before the composition, with only a change in meaning.

Other examples:

a chromatic scale uses the twelve tones of the octave, while a regular scale only uses eight, or seven different notes (as the first note is played twice)