What is the merciless selection from Elie Wiesel?

Answer 1

the most remembered situation in the story

Answer 2

"Merciless selection" refers to the process during the Holocaust where SS officers would select which prisoners were fit to work and which would be sent to the gas chambers. This dehumanizing practice would often separate families and lead to the immediate execution of those deemed unfit. Elie Wiesel vividly describes his own experience of this brutal selection process in his memoir "Night."