At the wannsee conference in 1942, the nazis made plans for
the invasion of poland.
air raids on london.
an attack on pearl harbor.
the final solution.

At the Wannsee Conference in 1942, the Nazis made plans for the Final Solution. The correct option among all the options given in the question is the last option. This conference was actually a meeting that was held between the senior officials of Nazi Germany for deciding the fate of the Jews. they wanted to create a final solution regarding this matter.

Probably japan. they got a really high life expectancy.