When the train arrives at Auschwitz-Birkenau in Elie Wiesel's "Night," the following happens:
- Men and women are separated - Upon arrival, the first action taken is the separation of men from women, which means that families are often torn apart immediately.
The other options provided do not occur:
- No one is given food and water.
- Families are not reunited; they are often separated.
- The prisoners are not immediately sent to work; instead, they undergo a selection process.
So, the correct point from your options is that men and women are separated.