Option: C. The Berlin Wall was erected to prevent skilled workers leaving the country.
Explanation:
The Berlin Wall first created to prevent people from leaving East German, which came under the communism (Russia). The East German government construct the wall in 196. People were leaving East Germany because of the economic as well as political reasons. The brain drain of educated workers and youngsters had a destabilizing impact on the East German economy. The only way to stop the moving of people was to close the border between West and East Berlin.
