Which figure of speech does henry david thoreau use in the following example: "i grew in those seasons like corn in the "?
personification
alliteration
simile
metaphor

because each is self-sufficient.  

dramatic irony occurs when the reader/audience knows more about a character's situation than the character does. the one main effect is that it gives the reader a sense of superiority, or detached superiority. the reader not only seemingly discovers what is revealed, but feels superior for doing so.