I can tell you the first one is " last year I could sing very well" not sure about the others I'm so sorry ( maybe its right )
Antecedent of a pronoun is a word that the pronoun refers to, or replaces. So, in this sentence, we are looking for the antecedent of the pronoun IT. The pronoun IT replaces the noun Chicago, which means that the word Chicago is the antecedent of the pronoun IT.
IT provides the best opportunity, meaning that Chicago does that.
The best answer is A-the author uses personification