What is onomatopoeia?

A.) the repetition of the same letter or sound at the beginning of words that are close together

B.) a repetition of similar sounding words occurring at the end of lines in poetry

C.) a word that imitates the actual sound that it is describing

D.) a comparison between two unlike objects using like or as

2 answers

C.) a word that imitates the actual sound that it is describing
Is this right?