Final answer:
The question pertains to Dr. Josef Mengele's cold and detached attitude during the selection process at Auschwitz, reflecting his lack of empathy.
Step-by-step explanation:
The question refers to Dr. Josef Mengele's attitude during the selection process at the Auschwitz concentration camp during World War II. Dr. Mengele, known as the 'Angel of Death,' is infamous for his cruel and inhumane treatment of prisoners. He oversaw the selection of new arrivals, deciding who would be sent to work and who would be sent to the gas chambers. His attitude during these selections was often described as cold, detached, and clinical, showing an absolute lack of empathy for human life.