Let's look at all the options:
a) nations were asked to pay for war damages
-this is not true as it already happened after WW1
b) individuals were given immunity from prosecution
This is also not true - they were not given immunity
c) nations on both
sides were found guilty of causing war
This is not true! The Axis powers were found guilty
d) individuals were held
accountable for their actions during wartime
-This is the correct answer! people were judged for causing the Holocaust.