It is true that Hitler believed Germany needed lebensraum, or living space, to thrive. The correct option among all the options that are given in the question is option "a". Before Nazism took its place, lebensraum was the word that got to the heart of the German people. The Germans were angry about the fact that the colonies that were under the rule of Germany had to be given away after World War I. Hitler was the main proponent of lebensraum for the Germans.