Answer: C) Group polarization
Step-by-step explanation:
Group polarization is defined as the situation in which group of people tend to discuss and talk about certain topic and after the discussion they have stronger opinion,views and inclination towards the believe and idea on that topic.
According to the question, if racially prejudiced group of student are into discussion about racial subject then it is more likely to increase their view in that subject .Hence they will become more prejudiced in racial manner.Thus group polarization is taking place in group.
Other options are incorrect because social facilities, loss in self awareness and low helping tendency of people in emergency situation is not described through racial and prejudiced scenario. Thus, the correct option is option(C).