Which of the following is defined as intentional exaggeration to create an effect?

The definition of intentional exaggeration to create an effect aligns perfectly with hyperbole. This literary device allows writers to emphasize a point or evoke strong emotions by overstating characteristics, qualities, or situations. For example, saying "I’m so hungry I could eat a horse" is an exaggeration that highlights extreme hunger in a vivid and often humorous way.

In contrast, simile involves a comparison between two different things using "like" or "as," which does not inherently include exaggeration. Alliteration focuses on the repetition of the initial consonant sounds in words, primarily for rhythm or emphasis, without any emphasis on exaggeration. Onomatopoeia refers to words that phonetically imitate the sounds they describe, like "buzz" or "bang," but it again does not involve any stretching of truth or exaggeration for effect. Thus, hyperbole stands out as the correct answer for the intentional use of exaggeration.