I believe the answer is: A.We gain our personal identities by interacting with others.
By communicating with others, human would start to understand the role that they can and expected to play within the social group. From that role, our identity would be shaped. Our personal desire and how other people perceive us both contribute to the type of identities that we have.
The answer is " B - Democratization "
D. The Federal Government’s powers are defined; other rights are reserved for the states and the people.