Lösung is a German word meaning, solution.
It forms part of the term Die Endlösung, meaning the Final Solution. The Final Solution refers to the planned and systematic extermination of the Jewish race by the Nazi government.
Jews were rounded up and taken to camps such as Auschwitz, as part of this process. They were then typically divided into two groups: the young, fit and strong, who would be sent off to work in the camp, and the old, ill and weak, who would be led toward the gas chambers and certain death.