In elie wiesel’s night, what best describes the narrator’s greatest fear once the ss guard separates he and his father from his mother and sisters? death pain hunger isolation

I would say isolation because Elie and his father are separated from his mother and 2 sisters so that he and his father go to the forced labour camp and his mother and sisters go to the gas chambers though the mother and one sister survive he does not see them again, at least not there. And seeing his father become helpless so that he must become his father's caregiver makes him resentful and then ashamed of his resentment.