What Argument Does Collins Give for Thinking That Caring Attitudes

What argument does Collins give for thinking that caring attitudes are important in themselves?

A) When comparing a son who looks after his elderly father out of love with a social worker who looks after the man for a paycheck, she notes that the son's action has greater value because of the son's attitude.
B) When comparing a son who looks after his elderly father out of love with a social worker who looks after the man for a paycheck, the son is more likely to take the old man's needs seriously.
C) When comparing a son who looks after his elderly father out of love with a social worker who looks after the man for a paycheck, she notes that both are equally valuable as long as they meet the old man's needs equally well.
D) When comparing a son who looks after his elderly father out of love with a social worker who looks after the man for a paycheck, she notes that the social worker is more likely to fulfill the man's needs, since she is a professional caretaker.