What physical feature was likely the
most difficult portion of the trails and
why?

37. what was hitler's "final solution"? a) the construction of walled ghettos in polish cities to hold "undesirable" groups b) a plan to exterminate all jews living in regions controlled by the third reich c) a series of fake medical experiments on jews conducted on topics such as oxygen deprivation d) a plan to force all "undesirable" groups to become "useful members" of the third reich