The correct answer is C. Thump, thump, thump
Step-by-step explanation:
In writing, an onomatopoeia refers to a word that imitates or represents sound, including sounds from animals such as the onomatopoeia "meow" that represents the sound made by a cat or sounds from objects such as "bang" that can represent the sound of an explosion, this is commonly used in certain types of texts such as comic books that use onomatopoeia to emphasize the sound or effect of certain actions. Additionally to this, as language onomatopoeias are not universal despite they represent universal sounds, because of this one sound can be represented in different ways according to the language. Considering this, the line that is an example of onomatopoeia is "Thump, thump, thump" because these are words are being used to represent or imitate the sound of a blow or a rhythmic sound, which is exactly the purpose of onomatopoeias.