Which of the following is an example of alliteration?

Alliteration is a stylistic literary device characterized by the repetition of the initial consonant sounds in a sequence of words, creating a rhythmic or musical quality in a phrase. The phrase "Busy bees buzz" exemplifies alliteration because the initial 'b' sound is repeated in "Busy," "bees," and "buzz." This repetition enhances the phrasing, making it more engaging and memorable.

In contrast, the other phrases do not feature this same initial consonant repetition. "Cold as ice" employs a simile to draw a comparison between coldness and ice. "Bright like a star" also utilizes a simile, comparing brightness to a star. "Time flies" is an idiomatic expression that conveys the passage of time, but without the alliterative quality present in the correct choice. Thus, "Busy bees buzz" stands out as the clear example of alliteration.