What determines the meaning of a poem?

When people are asked to recall a list of words they had earlier memorized, they often substitute synonyms for some of the words on the original list. this best illustrates the impact of:

In the story "seventh grade," how do victor's hopes and expectations about teresa at the beginning of the school day compare with his hopes and expectations about teresa at the end of the school day? his hopes and expectations are exactly the same at the end of the day. his hopes and expectations are completely different at the end of the day. his hopes and expectations are strengthened by the end of the day. his hopes and expectations are weakened by the end of the day.

This is the political, social, cultural, and economic 'time and place' surrounding the creation of a literary text.