The answer is D. When you are saying what a broader subject is, you surround it with commas. For example, when I say "My aunt, Sally, is old.". My broader subject is aunt. I show more detail by telling you her name, Sally. I hope this helps!
A connotative meaning of a word means that, it is the secondary definition of the word which generally expresses the idea or feeling of the word, aside from its dictionary or literal meaning. The word utopia means an imaginary perfect place. In other words, it is a paradise. The connotative definition of utopia is superior and incomparable happiness.
Is this from the book Things Fall Apart?