Question

night chapter 3, pg 35
what happened to the strong men the ss officers were looking for?
a few ss officers wandered through the room, looking for strong men. if vigor was that appreciated, perhaps one should try to appear sturdy? my father thought the opposite. better not to draw attention. (we later found out that he had been right. those who were selected that day were incorporated into the sonder - kommando, the kommando working in the crematoria. béla katz, the son of an important merchant of my town, had arrived in birkenau with the first transport, one week ahead of us. when he found out that we were there, he succeeded in slipping us a note. he told us that having been chosen because of his strength, he had been forced to place his own fathers body into the furnace.)
○ the strong men were able to escape.
○ they were moved to a different camp so they didnt cause any trouble.
○ those who were selected that day were incorporated into the sonder - kimmando, the kommando working in the crematoria.
○ the strong men were thrown in the flames so they wouldnt fight back.

Explanation:

The text clearly states that those strong men selected by SS officers were incorporated into the Sonder - Kommando working in the crematoria. Bela Katz's example further supports this.

Answer:

Those who were selected that day were incorporated into the Sonder - Kommando, the Kommando working in the crematoria.