How many prisoners came through the Auschwitz camps?

Jews arrived as prisoners. From 1940-1941, at any time, there were between 13,000 and 16,000 prisoners in Auschwitz I. By 1942, there were 20,000. Most of these prisoners were not Jewish, because most of the Jewish prisoners were sent to Auschwitz II.

the answer to your question is,

d. when a child was born.

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