Parent-child arguments during the teen years indicate:

The arguments indicate children's desire to make their own decisions.
Before entering the teen years,  The sense of acceptance that children need came solely from our parents.
After entering the teenage years, we will start to desire the capability to make our own choice in order to get acceptance from another social group beside our family's. This often create contradiction of value between our parents the new group that lead to the arguments.

B. it promoted the powers of the executive branch