C. The Underground Railroad helped slaves escape to the North.
The reason why an outsider would find Chelmno so quiet in comparison to other camps Prisoners were killed in mobile gas vans on the way to the camp.
During the holocaust in Germany a lot of Jews were killed. The Chelmno was an established Jew killing center. Gas poison was used the murder this people in their numbers.
When the killers got hold of the Jews, they would lead them to a truck that could contained up to 50 people. Immediately the trucks were full, they would introduce carbon monoxide into the vans.
The Jews died by asphyxiation. After their death the van would be moved into the forest camps were there bodies are deposited.
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The answer is
X= -4
Hopefully this helps:)
