Answer: Courage, Strength and Passion.
Explanation: A denotative meaning or denotation, is the literal meaning of a word (the one we can find in the dictionary), the connotative meaning or connotation is the meaning the author or the audience give to a word, based in past experiences or emotions linked to that word, in this case, the word fire has only one denotative meaning, but it can have many different connotations, in this case in the given phrase "a fire within his heart" the word fire means the courage, strength and passion that have driven him to achieve his goals.
