As germany weakened, the allies sought
a. a stalemate.
b. the unconditional surrender of germany.
c. a mutually agreeable treaty.
d. an alliance with germany against russia.

As Germany weakened, the Allies sought the unconditional surrender of Germany. The correct option among all the options given in the question is option "b". Germany had to take full responsibility for the war and the destruction caused by the war. Germany had to pay compensation and bow to all the terms set down by the Allies.