A. Distance is irrelevant to moral obligation.
In "Famine, Affluence, and Morality," Peter Singer argues that our moral obligations to help others are not diminished by distance. He suggests that we have an equal responsibility to help those who are suffering, regardless of whether they are nearby or far away. Therefore, when he states that moral obligation “takes no account of proximity,” he is emphasizing that the need to prevent suffering should not be influenced by how close or far away the person in need is.