Final answer:
Mill's approach to utilitarianism introduces qualitative distinctions among pleasures and he distinguishes between higher and lower qualities of pleasure.
Step-by-step explanation:
b. Mill's approach to utilitarianism differs from Bentham's by introducing qualitative distinctions among pleasures, where Bentham only considers the quantitative aspects of pleasure.
c. J. S. Mill's approach to utilitarianism aligns moral theory with the history of ethics because he allows qualitative differences in moral judgments.
d. Mill distinguished between different (higher and lower) qualities of pleasure in his formulation of utilitarianism. Higher pleasures are associated with the exercise of our higher cognitive faculties, while lower pleasures are associated with the exercise of our lower faculties.