The sentence which is the most subjective is D. My mother had to be the best cook in the world.
It is subjective because that is your own opinion - the other examples are just facts.
I believe you're referring to "A Raisin in the Sun, " right?? If so, these words might symbolize Walter's wife's lack of support for him.
Yes because if you know the naswer you will answer the question you know.