The answer would be : D. Russian adaptation to extreme cold
If a steel is exposed to an extreme low temperature over prolonged period of time, the structural form of the steal could be damaged, which could lead to a destruction of a building's foundation. In order to prevent this, a country which extreme winter such as Russia developed a special steel that won't crack.
The arguments indicate <span>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.</span>
