Final answer:
Concentration camps, according to Brown, were designed for the purpose of annihilation, especially in the context of Nazi Germany's extermination camps created for mass murder.
Step-by-step explanation:
According to Brown, concentration camps were designed for annihilation as their ultimate purpose. While concentration camps did serve multiple functions during the Nazi era, including forced labor, extermination camps were specifically created for mass murder. These camps were part of the Nazis' final solution, aimed at systematically eliminating Jews and other groups considered undesirable by the Third Reich. Extermination camps like Auschwitz-Birkenau and Treblinka were designed to kill people shortly after their arrival, functioning as 'death factories.' Therefore, the correct answer to the question is (d) Annihilation.