Answer:
The sentence from Herman Melville's short story "The Lightning-Rod Man" that is an example of allusion is Who has empowered you, you Tetzel, to peddle round your indulgences from divine ordinations?
Step-by-step explanation:
An allusion is a device that writer use to make reference to something without being this present in the scene, this normally gives extra context to help the understanding either of a situation or a character, here the sentence is making reference to reason behind what the reader can see now, it is calling for the background.