Answer: C) The emotional meaning a reader brings to a poem .
Explanation: The connotation of a word is the meaning given by the context or even by the readers (or listeners) based on their emotions or personal experiences. It is the contrary of denotation, which is the literal meaning of a word or phrase. So from the given options, the one that represents what connotation involves in poetry, is the corresponding to option C, it involves the emotional meaning a reader brings to a poem.