According to Peter Singer's theory, we (the affluent) ought to give to the needy until we reach the level of marginal utility-which means that in giving the appropriate amount, we would reduce ourselves to very near the material circumstances of:

a. a middle-class American.

b. a Bengali refugee.

c. an immigrant from working-class Britain.

d. the average citizen of the United Arab Emirates.

b. a Bengali refugee

Explanation:

Peter Albert David Singer AC was a popular Australian moral philosopher. He was well known for his works in Bioethics.

He proposed a theory which states that:

'We (the affluent) ought to give to the needy until we reach the level of marginal utility-which means that in giving the appropriate amount, we would reduce ourselves to very near the material circumstances of a Bengali refugee'. This simply tells us that we ought to save the lives of strangers when we can do so at relatively little cost to ourselves.

B. a Bengali refugee

Explanation:

According to Peter Singer's theory, we (the affluent) ought to give to the needy until we reach the level of marginal utility-which means that in giving the appropriate amount, we would reduce ourselves to very near the material circumstances of a Bengali refugee