Answer:
A, as Germany developed these before and after the treaty and was not of direct effect of the treaty, Germany was split into east and west during the cold war, and Germany became a world power after world war 2 and before world war 1, Versailles made it hurt bad, and did it in too hard which forced a party to take power, be it the Nazi´s or the Communists, World War 2 was going to happen after this.
I Believe the answer is: Confederate--or a confederation of states.
In the confederate form of government, each states within the country have the voting power to overrule the regulations that made by the government.
This would make the government significantly weaker compared to the states and would basically give no influence to control the actions made by the states.
The most probable answer between these three for this problem would be B. Population growth.
Though the types of rocks are also affected when water is a limiting factor, there would only be other types of rocks that would arise which takes into account that water is a limiting factor. The amount of evaporation, on the other hand, would also be affected. The population growth, however, would be greatly affected that it would be slowed down since population growth greatly depends on the essentials of maintaining life where water lies as one of the main factors of promoting life. When water is a limiting factor, population growth would surely decrease and is slowed down.