Final answer:
In the book 'Resistance,' the OD and Judenrat in Warsaw were liquidated by the Nazis during the Warsaw Ghetto Uprising, which is option (a) from the given choices.
Step-by-step explanation:
In the book, Resistance, the outcome for the OD (Jewish Order Service) and Judenrat (Jewish Council) in Warsaw, particularly during the Warsaw Ghetto Uprising, culminated in their destruction. The Nazis, seeking to eliminate the Warsaw ghetto, faced stiff resistance from the Jewish residents including those fighting as part of the Jewish Combat Organization (ZOB). Unfortunately, the heroic struggle was met with overpowering force. The SS chemically liquidated the ghetto, and on capturing the ZOB leaders, effectively crushed the organized resistance. Those captured were immediately sent to extermination camps, such as Treblinka, or to labor camps. The correct answer to the student's question is (a) They were liquidated by the Nazis.