I need a short essay on one of these three topics

1.  Is there an obligation to promote the common good?  Contrast the views of Bentham, Kant, and Ross on that question.  Whose view do you think is best?  Why?

2.  What does it mean to claim that ethics is an a priori discipline?  Who agrees with that view?  What is Bentham's view of the nature of ethics (hint: empirical science)?  How does Ross combine those views?

3.  Both Kant and Ross are nonconsequentialists, yet they disagree about the role of consequences in determining the morally right act.  Compare and contrast their views regarding the role of consequences.  which view is preferable?  Why?