The most accurate response regarding the significance of the title "Night" in Elie Wiesel's memoir is:
It represents the darkness of the concentration camps.
The title symbolizes not only the physical darkness encountered during the horrific experiences in the concentration camps but also the emotional and spiritual darkness that enveloped the lives of the prisoners. "Night" reflects the themes of despair, loss of faith, and the absence of hope in the face of unimaginable suffering.