Answer:
b. Group polarization
Step-by-step explanation:
Group polarization is when a group makes decision different from the one already formed by its members.
This situation occurs when members of a group think or feels that their thoughts are better than other members even though they keep the original thoughts of the members while they strenghtened theirs. When there is comparison between social groups, it give rise to group polarization.
Example of group policy is outcome of all forms of violence, terrorism and general public policy.