Relativism

a) makes it impossible for us to correctly criticize other cultures' customs and values

b) makes it impossible for us to correctly criticize our own societies' customs and values

c) can lead to conflicting moral duties

d) all of the above

option D

Explanation:

The correct answer is option D

Relativism state that morality is relative it depends on the culture. Whether the action is right or wrong it depends up on the society norms.

So, the options given justifies relativism because you cannot criticize other culture, customs and values.

Even Relativism does not allow anyone to criticize it's own society.

It is correct that relativism can lead to conflicting moral duties.