What step did the nazis take in preparation for the "final solution? "

a. they annexed the sudetenland to serve as a temporary jewish homeland.
b. they drafted non-germans into the army to serve as concentration camp guards.
c. they made jews register with the government and confined them to ghettoes.
d. they dedicated the country's best scientists to developing atomic weapons. the nazis take in preparation for the "final solution? "

Its c but here what  happened after they registered
By 1941, almost the entire German Jewish population would be taken from the ghettos to a concentration camp. They would soon know the names of Dachau, Fossenburg, Buchenwald, Dora, Bergen-Belsen, Sauchsenhausen, Ravensbruck and Neuengame. Hitler then began to implement the Final Solution in every European nation that he was able to control and dominate. Jews of Austria, Czechoslovakia, Poland, France, Italy, and many more were being taken from their homes and brought to killing centers, labor/extermination camps, and concentration camps. They would soon learn the names of where their destinies were to lie in the counties surrounding Europe, Natzweiler, Mauthausen, Theresienstadt, Gross-Rosen, Stutthof, Chelmo, Treblinka, Sobibor, Majdanek, Belzec, and the famous and most destructive of all the camps, Auschwitz/Birkenau. Hitler's success is credited to his carefully planned steps and the reaction to those steps by the other world powers (i.e. The United States and Great Britain), and the German population. By 1941 the Allied powers were well aware of the situation and the goal of Nazi Germany, but political strategy prevented any intervention into the crisis. When the extermination of the Jews began to move more rapidly in 1942, the Allies were at their weakest. The United States was mostly consumed in the war in the Pacific with the Japanese and had no active participation in Europe. Britain too was isolated because Germany had already a tight grip on most of the countries surrounding it, which included, France, Poland, Austria, and Czechoslovakia. Germany's goal of the Final Solution came at the most opportune time while the Western powers were preoccupied.

The populace also contributed to Hitler's success by itsinability to differentiate Hitler's main objectives. His objectives were to wage two wars, one aimed at anyone who opposed him and the second aimed at the destruction of the Jews. The Nazi Party was consumed by the demand to complete the Final Solution, thus creating one of the greatest feats of man utilizing the Jews as a mass labor force. Hitler spent a majority of his time and energy in seeing that the Final Solution was done to its most efficient capabilities and secrecy, although these may have also led to his failure.

Wait u answered your own question