Final answer:
Benjamin, imprisoned at Dachau, would most likely report to Theodor Eicke, who is associated with Dachau's command structure, as opposed to other Nazi figures connected with different roles and camps.
Step-by-step explanation:
Benjamin, having been imprisoned at Dachau and assigned to work on a building crew, is most likely to work for Theodor Eicke if he is told to report to work at the commandant's house. Theodor Eicke was a key figure in the administration of the Nazi concentration camps and is best associated with Dachau's command structure.
Other figures such as Heinrich Himmler, Josef Mengele, and Rudolf Hoess are more prominently connected with other camps and broader aspects of the Nazi regime. Himmler, as the head of the SS, was responsible for the entire network of camps and the enforcement of Nazi policies. Mengele is infamous for his cruel medical experiments at Auschwitz, and Hoess was the commandant of Auschwitz.